Thanks the Imp....
Open the baldur.ini file inside the game folder with Notepad and search the [Alias] word, the directories under that HAVE TO locate the correct game folder, aka if they still have the apostrophe's, remove them, and save the file. And then try again.
Will it solve the problem with the patch 5512 too?
Well, honestly, I do not remember if the BWP needs the 5512 patch, the GOG game comes natively with the 5521 patch, and there shouldn't be a need to revert the patch. You might need to move the 25movies.bif to a different folder from what I remember. Now, unless Leonardo Watson has changed how the check works, which could very well be the case ...
As from my notes with GOG games, you should need to go here, download the "TOSC DirectX 8+ International patch" and apply it, well actually it just extracts the bgmain.exe it contains onto the game directory. And yes, the fact that the game works(aka you fix the [Alias] section to point to the correct folder) is essential for the BGT-weidu to be able to work. The check the program does is not just a hocuspocus move for nought.
Edited by The Imp, 19 October 2017 - 04:08 AM.