Netruk44/uesp-wiki-content huggingface dataset:
Tes4Mod:PCS Library/Distant land meshes are misaligned (Oblivion)

Problem
Distant land meshes are misaligned (i.e., two halves of a hillside do not line up).

Cause
Called a "Land Tear", these are gaps in the landscape caused by two mods making different edits to land heights in the same cell, typically only seen when you're right on top of them. 
A "Quadrant" (Quad) is a space of 32x32 cells. If you have created a map by painting one whole viewable area in the heightmap editor, you have four quads (visible as divided by the green lines in the overview, if you have created one).  They meet in the lower lefthand corner of cell "0,0". (Source: CS Wiki). The cells that make up a quad are not static or fixed, but depend upon the mods loaded that affect the viewable area.  Changes in the Load Order can cause the cells that make up a quad to change, leaving mismatched land heights. 
See The TES Texture Guide (TESTG) TESTG Glossary, TESTG Utilities, and TESTG VWD-OB pages for additional details on the complex subject of LOD/VWD textures and meshes.

Solution: The utility Land Magic tries to detect and fix tears in the landscape. 
Note: TES4LODGen or other LOD Generators should be run after the Land Magic patch is created the first time (because it will affect the Load Order), but not necessarily afterwards if Land Magic is run again (unless the Load Order changes).
Tes4Mod:PCS Library/Distant objects light up yellow (Oblivion)

Problem
Distant objects light up yellow (at certain angles).

Cause - Bad LOD Mesh
This problem can appear when a mod contains a bad LOD land mesh.

Solution: Try to determine which mod is contributing the bad LOD mesh(es) and notify the mod author(s).

Cause - Bad Mod Install
This glitch can also appear when a mod with distant land LOD meshes is not installed properly.

Solution: Try to reinstalling mods that installed distant land meshes. Such mods would contain a folder  . Maybe another mod has been installed on top of it or was not completely uninstalled previously.
Tes4Mod:PCS Library/Error:Cyclic Redundancy Check (CRC)

Problem
Windows throws a CRC error.

Cause
This error may be shown if the disc is corrupt or dirty.

Solution: Try to clean the disc off, and, hopefully, you will not have to replace the disc with a new copy.
Tes4Mod:PCS Library/Error:Oblivion has stopped working

Problem
The game quickly crashes and Windows displays the error message "Oblivion has stopped working".

Cause - Insufficient Hardware
This error can often be a result of insufficient hardware, a common case for laptops (or lower-end desktops not at all intended for gaming) that do not have separate graphics cards.

Solution: See System Requirements, and Check your Dxdiag (Start > run > enter "dxdiag") and if after "Display Devices: " the entry says "chipset" or does not say ATI XX or NVIDIA XX, your system lacks a separate card. It is often very difficult to upgrade systems that were not build to include separate cards, as they usually lack the space or supporting hardware to add one. Some of the newer Intel MOBO chipsets can run the game at minimal settings with the latest driver updates, but the typical resolution to this situation is to by a machine intended for at least gaming or more graphics-intensive activity, even serious movie-watching.

Oldblivion is a good place at which to get help with running Oblivion (and other games) on older hardware.

Solution: Upgrade your machine to a gaming-ready machine.
Tes4Mod:PCS Library/Error:d3dx9 27.dll not found

Problem
Windows throws a not found error for d3dx9_27.dll.

Cause - DirectX 9c Needed
Either an older version of DirectX is installed, or the version of DirectX installed does not include the needed DX9c DLLs.

Solution: Install DirectX 9.0c.


Related Problems
PCS Library/Error getDeviceCaps()
Tes4Mod:PCS Library/Error getDeviceCaps()

Problem
Windows throws an error about getDeviceCaps().

Cause - DirectX 9c Needed
Either an older version of DirectX is installed, or the version of DirectX installed does not include the needed DX9c DLLs.

Solution: Install DirectX 9.0c.


Related Problems
PCS Library/Error:d3dx9_27.dll not found
Tes4Mod:PCS Library/Frequent crashes in Planes of Oblivion

Problem
The game often crashes in Planes of Oblivion.

Cause - Harvest Flora
Older versions of Harvest Flora had added a bugged script that would cause crashes to Harrada, a plant found only in these realms.

Solution: Upgrade to the latest version of Harvest Flora (v3.0.1). 
:''Note: The latest plugin's description still says v3.0.0.

Cause - Unstable Setup
If your machine is having enough trouble, even playing the Vanilla game, Daedric Realms can be problematic. A bunch of mods can really exacerbate the issue.

Solution:''' Try to tune your modified setup, if possible.
Tes4Mod:PCS Library/Frozen animations, slow or stuck doors and gates, severe decrease in FPS (after investing over 150 hours in a profile)

Problem
Experiencing frozen animations, slow or stuck doors and gates, severe decrease in FPS (usually after investing at least 150 hours in an Oblivion profile).

Cause - A-Bomb Bug
This problem can be cause by a few bytes of bad data appearing in a save file.

Solution: If you use Wrye Bash, apply Bash's A-bomb fix to the save by right-clicking on the save in the 'Saves' tab and choosing the option from the context menu.

Solution: If you do not use Wrye Bash, download and run the Oblivion Animation Fixer.

Cause - Incompatible Codecs
Some, if not all, of these issues can be caused by incompatible codecs.

See PCS Library/Keyboard and mouse stop working shortly after loading a save for possible solutions.

Related Problems
PCS Library/Keyboard and mouse stop working shortly after loading a save
PCS Library/Keyboard
Tes4Mod:PCS Library/Game Mistakes Newer Graphic Card's Capabilities

Problem
Game Mistakes Newer Graphic Card's Capabilities

Cause - Newer graphics card misdetected
When Oblivion is first run, it attempts to autodetect the maximum Shader Model and Shader Package the video card is capable of using. Unfortunately, some newer cards (both ATI and NVIDIA) are sometimes misdetected and Oblivion configures itself to use a Shader Package lower than the video cards maximum supported.
 
While this may not always cause issues, some cards will experience a drastic difference in performance between newer and older shader packages. Using the highest shader model supported by your video card is generally recommended, as newer Shader Models often include improved shader algorithms as well as visual enhancements.

Solution: To force Oblivion to use the highest possible shader package (only up to Shader Model 3.0; by default 2.0 is used):
First enter the "Oblivion" directory located in the "My Games" folder (which is in turn located in the "My Documents" directory). There should be a file named "RendererInfo.txt". 
Locate the bottom entry in that text file and take note of the number listed (it should be between 1 and 19, as in "shaderpackage007.sdp").
Then enter the "Data" folder located in Oblivion's directory in "Program Files" (or wherever the game is installed). There should be a folder named "Shaders". 
Assuming your video card has support for Shader 3.0 or higher, make a copy of the Shader 3.0 file named "shaderpackage019.sdp".
Now make a backup copy of the Shader 2.0 file "shaderpackage0[number you found in the RenderInfo file here].sdp (i.e "shaderpackage007.sdp" as "shaderpackage007.org").
Once you have made a backup copy of the shader, delete the original file.
Now rename the copy you made of "shaderpackage019.sdp" to the name of the shader that you made a backup of (i.e. "shaderpackage007.sdp").
You should now have 2 copies of "shaderpackage019.sdp", except one should now have the name of the Shader 2.0 package that contained the number written in the "RenderInfo.txt" file (i.e. "shaderpackage007.sdp").
Now, whenever the game attempts to use the incorrect shader package, it will instead be using the highest one.
 
Note that this may cause some issues, such as crashing.  If this is experienced, simply recopy the backup of the original Shader 2.0 package you made (i.e "shaderpackage007.org" as "shaderpackage007.sdp").

Solution: Simply edit the "RenderInfo.txt" file's last entry to use the correct Shader 3.0 package: "shaderpackage019.sdp".
Once you saved the text file, change it's protection properties to "read only". This way the file won't revert to it's original state each time you run Oblivion.
: Don't forget you did this if you change graphics cards later on, as otherwise the game will not be able to update the information.
Tes4Mod:PCS Library/Game freezes after combat actions

Problem
Game freezes after swinging a weapon, shooting an arrow, or using a spell

Cause - DirectShow codec conflict
DirectShow filters (codecs) conflict with Oblivion

Solution: Use Nightmare2013's Codec reset utility v4.1 to reset to defaults.
Tes4Mod:PCS Library/Game freezes on music track change

Problem
Game freezes on music track change

Cause - Audio Codec conflicts
Audio codecs that are handling the MP3 rendering on your pc.

Solution: Remove or disable the conflicting codecs. These codecs include, but might not be limited to, Nero, Vodei, Moonlight codecs, as well as the "ffdshow media decoder".
Tes4Mod:PCS Library/Geforce FX cards performance

Problem
Geforce FX cards performance is slow

Cause - Bad Shaders
This is because Oblivion uses 2.0 shaders for almost all its graphics. Unfortunately the Geforce FX series has a very bad implementation of the 2.0 shader and as a result Oblivion will not run at any acceptable speed. More information about why the FX series is so slow can be found on wikipedia here: GeForce FX series

Solution: Workaround: 
Editing the Oblivion INI Settings and turning off specular, diffuse and ambient lighting will solve almost all the performance issues resulting from the slow shaders. It will also result in significant decrease in game appearance quality (disabling the ambient shader gives horrible "fullbright" looks to everything; while removing diffuse shader covers places meant to be darker than the rest with big opaque surfaces). Disabling the Specular shader alone helps a lot though.

Solution: Solution 
Upgrade your graphics card
Also you can give a try to Oldblivion which can increase the performance in low end videocards.
Tes4Mod:PCS Library/Googly Eyes

Problem
Googly Eyes.  You can see through the right eye of every NPC in the game.

Cause - Mismatched eye meshes and textures
A conflict exists between the textures and meshes of two or more mods affecting the eyes of NPCs.  This is most common when cosmetic mods are combined with body meshes they were not designed for.

Solution: Don't mix cosmetic mods or use ones designed for different body meshes.

Solution: Use Wrye Bash to resolve conflicts.  See the Wrye Bash Pictorial Guide - Basics and Installers Intro.pdf regarding the building of the "Bashed Patch" file.
Tes4Mod:PCS Library/Graphic Problems with AGP Cards

Problem
Graphic Problems with AGP Cards

Cause - AGP Fast Writes
Unknown reason.
Additional Information
General graphics problems, such as artifacts in the introductory cinematic.

Solution: Disable AGP Fast Writes. This option can be enabled or disabled in the BIOS Setup. The exact method is different per motherboard. Consult its manual to find the correct method.
Tes4Mod:PCS Library/Invisible body parts when wearing certain items

Problem
Parts of the body (PC or NPC) are rendered invisible or disappear when certain wearable items (armor or clothes) are equipped (typically by a female).

Cause - No gender version of the item
This always happens when you equip some items which are for single gender only, and they would become 'invisible' once you change your gender because there are no mesh settings for the opposite gender.  This can also cause the equipped part of the body to vanish.

Note: That particular "invisible" bug only concerns armor and clothing with a male mesh.  Without a female mesh, the game just uses the "default" male one [implied is: 'for other vanilla items'].

Solution: Use the mod " " (by Nuska) which provides female modeled versions of vanilla male armor, suitable for any body type.  Female versions of other clothing are not so neatly packaged.  Search the Nexus, but pay attention to the suitability for your preferred body type mod.

Solution: Create a female version of the item, and place in the female mesh category folder.  This can be as simple as copying and renaming the male version, though some clipping and/or "bad fit" is then to be expected.

Cause - Bad path reference
This problem can be the result of a bad texture path reference in the relevant mesh (NIF) file.  This happens when an 'absolute' (i.e. "C:\Games\Oblivion\Data\Textures") rather than 'relative' ("..\Textures") path is used.

Solution: See if there is an update for the relevant mod. You can determine which mod owns the item using one or two in-game troubleshooting aides. If an NPC is wearing the item, you can kill him or her via the console command   and then view the NPC's inventory. The troubleshooting aides listed in that article make such an action unnecessary, however. Some can also give the file path for a targeted mesh.

After determining which file or file(s) may contain a bad filepath, let the author of the mod know. To fix the issue yourself, open the mesh in a NIF-editor (i.e., NifSkope) and make sure texture paths begin in the Textures folder, instead of a drive letter, and contains back slashes' instead of forward slashes.

Solution: It may be the case that the mod has been updated, so check that too.


Related Problems
PCS Library/Obscured or submerged part of character invisible below water and behind cobwebs
Tes4Mod:PCS Library/Invisible creatures in game and in TESCS

Problem
Creatures are rendered invisible in the game and in TESCS

Cause - Missing Normal Maps
This problem is caused by textures missing that lack associated normal maps.

Solution: See if there is an update for the relevant mod. You can determine which mod owns the creatures and the texture paths with in-game troubleshooting aides.

After determining which file or file(s) may contain a bad filepath, it would be nice let the author of the mod know if possible.
Tes4Mod:PCS Library/Keyboard, mouse and music stop or do not function properly

Problem
The machine's keyboard, mouse and music stop or do not function properly

Cause - Incompatible Codecs
This problem can be a result of incompatible codecs installed by media-related software.

Solution: Try Uninstalling any of the following:
Arcsoft Total Media Extreme
Tes4Mod:PCS Library/Keyboard and mouse stop working shortly after loading a save

Problem
The keyboard and mouse stop working shortly after loading a save.

Cause - Incompatible Codecs
This problem is often caused by incompatible codecs, particularly FFDShow.

Solution: If you have FFDShow, make sure it does not affect Oblivion by unchecking Oblivion in the list of programs for audio and video. Uninstalling FFDShow works as well.

Solution: Windows XP users can try Nightmare2013's Codec Reset utility.

Solution: Users can also try installing the K-Lite Codec pack, making sure it is configured to repair broken codecs, and then make sure FFDShow does not affect Oblivion. The standard version is enough to get most of the commonly-used codecs. Most importantly, it is compatible with Oblivion.


Related Problems
PCS Library/Keyboard
Tes4Mod:PCS Library/Land textures are tiled, purple, mini maps of Oblivion's Imperial City

Problem
Land textures in the game are rendered as tiled, purple, mini maps of Oblivion's Imperial City.

Cause
This is a result of Oblivion's shaders being corrupted. The cause is unknown, but it seems it can happen on any setup.

Solution: Reinstall the Oblivion's official shaders. If you do not have a backup, download them from TESNexus.
Tes4Mod:PCS Library/Large square holes in landscape

Problem
There are large square holes in the game's landscape.

Cause - Resource Exhaustion?
This seems to happen in the game randomly sometimes, possibly tied to resource exhaustion.

Solution: If it's just one or two holes, restarting the game should take care of a particular instance of this issue.

Cause - Esmified ESP
This problem is a symptom of an esmified plugin file. These plugins (ESP) would appear in blue text in Wrye Bash.

Solution: Espify any esmified plugins (and rebuild the Bashed Patch).

Cause - Bad Plugin Edit
This problem could also be the result of a bad or wild plugin edit.

Solution: Try to identify the plugin by deactivating groups of plugins at time and then notify the author, try to delete the edit in TES4Edit or try to fix it in TESCS.

Solution: If the mod contains many such edits, it might be more efficient to drop the mod (at least until it is cleaned).
Tes4Mod:PCS Library/Many random missing textures and black textures

Problem
There are random missing textures and black textures all over the place.

Cause
In addition the hard cap of 255 active plugins (beyond which Oblivion will not load anymore), there also exists a threshold for the total number of BSA and plugin files installed to the Data folder, active or inactive, which varies by system for as of yet unknown reasons. The threshold is approximately 300-400.

Solution: Users of Wrye Bash can remedy some of the problem by using the Bashed Patch to merge certain plugins and turning on  , by right-clicking on the 'File' header, to "hide" inactive files from Oblivion by changing their extension.

Solution: Oblivion Mod Manager Extended also offers a ghosting option. Differently, however, it moves the "ghosted" plugins to a subfolder in the data folder. This takes them out of the load order entirely, of course, meaning that plugins that need to be re-imported or re-merged into the Bashed Patch have to be unghosted or manually moved back into the Data folder beforehand. That does not matter if the plugins are not being used at all and/or you do not use a Bashed Patch.

Solution: Manual users can do what OBMM Extended does and move inactive plugins into a subfolder when they are inactive.

Solution: It help some if you do not install mods that are not being used at all.

Solution: If you are up against the limit even after hiding not active plugins, you try merging some plugins. Please, take care to read the instructions and watch what you merge. Merging BSAs is a valid and possibly less tedious option as well. See BSA Repacking for tips and considerations.
Tes4Mod:PCS Library/Missing items after reloading

Problem
Dropped items and newly created items are lost after saving & reloading.

Cause - FormID bug
This behaviour is typical for an unpatched "Shivering Isles" game. The FormID bug was introduced in unpatched versions of SI where dropped and newly created items are lost after saving/reloading because of FormIDs not getting recycled. If you still experience the problem AFTER patching the game, likely either the patching went wrong or something is messed up in your savegame. The patch won't recover previously lost items, but should prevent it from happening thereafter.

Solution: Check your game version on the Title Screen. 
Patch "Shivering Isles" from the Official Support website. 
Patch the game to the latest version (v1.2.0416) using  .
Tes4Mod:PCS Library/Mod content does not appear in game

Problem
Mods' content does not appear in game at all.

Cause - Old Version of Oblivion
Most new mods are made with the latest version of the Construction Set, which often means that those mod require Oblivion be patched to the latest version (v1.2.0416) in order to work at all.

Solution: Update Oblivion to the latest version.

Cause - UAC Protection
Windows 7 and Windows Vista users have User Account Control (UAC) on by default, which prevents applications without administrator privileges from installing and modifying files.

Solution: This issue affects many utilities for Oblivion, so the cleanest, safest method to avoid this and further related issues is to uninstall Oblivion and reinstall Oblivion to a folder outside of UAC protection (i.e.,  ). The same applies to Steam, if Oblivion is installed through it.

Solution: If the mod content was being installed through an executable, you can try to give that EXE administrator privileges by right-clicking on it and use the   option.

Solution: It is possible to only disabled UAC protection on the folder in which Oblivion is installed. Since Oblivion and other mods modify  , you may need to disable protection on that folder as well.

Selectively Disable UAC ...

Solution: Another clean method (albeit a bit less safe) is to turn off User Account Control all together.

Cause - Inactive Plugins
This issue will certainly arise if a mod's plugins are not active in your load order.

:''Note: Not all mod's have plugins.

Solution:''' Make sure the plugin is checked in your mod management utility (i.e., Wrye Bash, OBMM, etc). If you do not use any mod management utilities, use the Oblivion Launcher and go to 'Data Files'. Make sure the plugins are checked there.

Cause - BSA Is Not Loading
If the mod's files are packed in a BSA, it may be the case that the BSA is not registered or associated with a plugin, and thus this issue will be present.

Solution: See Loading BSAs. In summary: Either register the BSA in the   or rename the BSA to   .

Cause - BSA Timestamp
It is possible that a mod installs loose files which are not being loaded because a BSA with a more recent timestamp than the loose files contains versions of those files.

Solution: Use a file redating tool to set the BSA timestamp to an earlier date than the loose files (i.e., 01/02/2006, one day later than the date of the original BSA files).


Related Problems
PCS Library/BSA content does not load
Tes4Mod:PCS Library/Mod persists even though uninstalled or disabled

Problem
Uninstalled or disabled a mod, but can't leave a room modified by it; or some other aspect of the mod persists.

Cause - Wrye Bash Patch file
Mod records were merged into the   file.  The mod ESP may or may not have been ghosted.

Solution: "Ghost" the mod ESP file in the Wrye Bash "Mods" tab, and rebuild the  .
Tes4Mod:PCS Library/Mod resources are not being installed with an EXE installer

Problem
After running an executable (EXE) installer, some or all resources are not installed.

Cause - UAC Protection
Windows 7 and Windows Vista users have User Account Control (UAC) on by default, which prevents applications without administrator privileges from installing and modifying files.

Solution: This issue affects many utilities and installers for Oblivion and mods, so the cleanest, safest method to avoid this and further related issues is to uninstall Oblivion and reinstall Oblivion to a folder outside of UAC protection (i.e.,  ). The same applies to Steam, if Oblivion is installed through it.

Solution: You can try to give the EXE files the necessary rights by right-clicking on it and using the   option.

Solution: It is possible to only disabled UAC protection on the folder in which Oblivion is installed. Since Oblivion and other mods modify  , you may wish to disable protection on that folder as well.

Selectively Disable UAC ...

Solution: Another clean method (albeit a bit less safe) is to turn off User Account Control all together.
Tes4Mod:PCS Library/Mouse and keyboard no longer respond

Problem
Mouse and keyboard no longer respond to movement orders.  Mouse movement to look around still works, but the buttons no longer do.  And no button on the keyboard used in-game responds except Alt-Tab out of the game.  They work fine outside of the game.

Cause - Console state
Either a mod conflict or a script has put the character into a "setrestrained" or "cutscene" state.  ("Purger" for instance is known to occasionally put the character into "cut-scene" mode when used in "Nehrim".)

Solution: Use the console command "player.refreshAnimData".  Note this is a temporary workaround.  It does not resolve the original cause of the state.  You must still determine the source of the conflict or script.

Solution: Use the console command "setrestrained 0" on the player.  Note this is a temporary workaround.  It does not resolve the original cause of the state.  You must still determine the source of the conflict or script.