EmperorFool
Deity
Did you copy the files from BULL's Assets folder to your CustomAssets folder? The BULL DLL expects certain XML files to be in place and will crash without them. There's nothing I can really do to make that less painful. 
To get back to how you had it before, remove the BULL DLL and rename the original back to the normal name. If you haven't copied BULL's Assets into the CustomAssets folder, you'll be okay. If it still crashes, you'll need to rename your CustomAssets folder and reinstall BUG.

To get back to how you had it before, remove the BULL DLL and rename the original back to the normal name. If you haven't copied BULL's Assets into the CustomAssets folder, you'll be okay. If it still crashes, you'll need to rename your CustomAssets folder and reinstall BUG.