[Verizon Galaxy S 5 General] damiensrules:
Thank you GeTex. I just wanted to understand the relationship between the problem and solution so as I am not just following instructions, but also learning to troubleshoot down the road. Took me a bit to get back to this since wife kept putting off backing up her phone since she'd been using it again while I tried finding a solution...but I digress...

So, I located the PIT file (S5_KLTE_USA_VZW.pit - https://www.androidfilehost.com/?fid=24052804347765167 - for anyone reading and interested) and tried flashing PIT with Odin and then flashing the PB1 Tar file (G900VVRU2BPB1_G900VVZW2BPB1_G900VVRU2BPB1_HOME.tar.md5) and started the root from scratch. Followed the same steps from OP from here, successfully rooted, SuperSU connected, BusyBox installed, and SafeStrap loaded...rebooted into SafeStrap recovery and tried installing Knox_Removal_SU_BB_INIT.D and screen immediately went black again, then back to home screen...so no luck with using SafeStrap systems yet...so, did some more browsing and found:

Tried these steps after wiping data: "PIT Only" > "PIT + TAR" > "TAR" then began from scratch and successfully rooted...oddity noticed is that SafeStrap wasn't installed during root process, so I manually moved onto SD and completed all steps through rebooting to SafeStrap recovery...next oddity, SD files couldn't be found and showed 0mb. Couldn't mount the storage or anything, rebooted to system and back to SafeStrap recovery and still not showing. Walked away for bit to do other things and when I came back to this, I rebooted to SafeStrap and the files now visible...win i guess?...but when I tried loading Knox_Removal_SU_BB_INIT.D again, screen goes black and back to home menu.

Another oddity, when I try to "Backup" in SafeStrap recovery, it fails...

[BACKUP STARTED]

* Backup Folder: /external_sd/TWRP/BACKUPS/4b57dacb/stock-2014-09-15--19-00-08 LRX21T.G900VVRU2BPB1/

E: Unable to create folder: /external_sd/TWRP/BACKUPS/4b57dacb/stock-2014-09-15--19-00-08 LRX21T.G900VVRU2BPB1 (errno=30)

E: Failed to make backup folder.

Thought I would bring this up as this is the only way i see anything on the terminal screen to relay back to you guys...I did manage to pull a recovery log and though I don't claim to be able to follow most of it, I did see a pattern regarding the SD card "Path does not exist" and "1000BOARD_HAS_NO_REAL_SDCARD" and a few others, which prompted me to check both phones and i discovered we had 2 different types of SD cards...So, I loaded Knox_Removal_SU_BB_INIT.D onto her phone storage and ran SafeStrap recovery to test the theory and it worked!! So, apparently there is an issue of some sort with her SD card that SafeStrap is unhappy with...any thoughts here might help others with this similar issue and for me to deal with loading new ROMs and what not as loading 2GB ROMs on the phone itself is painful...I am working through getting the OP Deodexed ROM installed so that this phone can finally have unlocked potential! I hope this information helps others deal with the odd SafeStrap issue and hope maybe the pros on here can maybe identify what would make an SD card cause this kind of issue with these programs. Cheers!