When can't rez, show only one error message; not two. And show more specific error messages.
Better error-handling and logging in case User Profile requests fail
Return more specific error messages if an attempt to enter a region fails due to permissions (in QueryAccess and IsAuthorizedForRegion)
Log the user when an inventory operation is blocked because the item/folder isn't in the Suitcase
Tell QueryAccess explicitly whether the user is coming in via Teleport or Cross, because the permission checks are different.

Previously we used a heuristic of checking if the entry position is 0 to differentiate between Teleport and Cross, but that doesn't work anymore since we've started providing the precise entry position for cross, too. That's required in order to ensure that the user is allowed to enter the parcel that he's walking into.