dynamic library failed to initialize (E0)

I downloaded the fix because I would like to add pools to my game, but I keep getting this error every time I apply the fix. 
I got a similar error before the fix but was able to fix it by changing the language to english (I'm Dutch, so it automatically installed it in Dutch). I switched off my antivirus and the .dll file is also in the correct map, so I'm not sure what's wrong.

Hello/hallo,

Are you sure that you REDID the Ultimate Fix after turning off your anti-virus software? Preferably first add the game folders to your anti-virus' exceptions list and then redo the fix. More information about that here: https://games4theworld.forumotion.com/t18422-the-dynamic-library-rlddll-failed-to-initialize-e0-error-fix