Second time finding a fix after changing my Documents on NAS by accident. You can have your documents folder moved to any network path, just make sure you use the URL of the path. NOT the FOLDER path:
DONT USE ex: (windows 8.1)
M:\3.BACKUP\Game saves\Documents
USE:
\\PANDORAS_BOX\Pandoras Box\3.BACKUP\Game saves\Documents
Step 1:
Disable offline files. Why? If your documents folder is massive or you simply dont want windows moving files BACK to your computer.
If disabled skip to step 2.
To disable:
>Press windows key
>Type "sync" and press enter
>Click "manage offline files"
>Click "disable"
> If popup mentions rebooting then reboot.
Step 2:
Find url link
To get the url link:
>Head to Computer
> Right click on white space, then click "add a network location"
> Navigate to your NAS or remote server where documents is at then click
> The url link will auto fill the box, copy it.
Step 3.
Change the path in documents location usin the url link:
>Go to your login name folder
>Right Click the documents folder (NOT the library document folder)
>Tab over to location
>Paste url link from step 2 in box
>Click Ok or Apply to finish
NOTE: If your documents folder is already moved then click NO when asked to move folder.
NOTE2: Windows should update the registry after this point. Step 4 is optional, but if the game encounters the save error still then proceed to step 4.
Step 4.
Check the registry pathing to documents folder.
>Press windows key
>Type regedit
> navigate to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
>Look for Personal (Windows 8/8.1) or My Documents (Windows 7)? To make sure you have the right folder just look for “documents” in the pathing area. If the path is in a URL form already then you have an issue I have not encountered. If not change the path to the URL link from step 2.
Hope this works!