Darksiders: Warmastered Edition Message Board  

Hi.
Since this is an older trainer you might be missing anti virus exclusions needed to run this.
You should exclude the following files and folders:
C:\Users\USERNAMEHERE\Cheathappens\
C:\ProgramData\CheatHappens
C:\Users\USERNAMEHERE\AppData\Roaming\Cheat Happens\
C:\Users\USERNAMEHERE\AppData\Local\Temp\CH_Temp.tmp
C:\Users\USERNAMEHERE\AppData\Local\Temp~Mnn133.tmp
C:\Users\USERNAMEHERE\AppData\Local\Temp~CheathappensTrainer.tmp

The last two might not be there before you manage to run the trainer. If you can't manually add them by text, you would have to do the others and then when trainer is running add the missing.