Is it possible, that is is caused by not running adts through groundeffects_fix.bat?
I was trying ground effects as well, possibly around the time it started throwing errors at me. Ground effects work, but I didn't use any fix on those adts, because after I tried it, those adts gave me immediate error after logging in to the game and without the fix it worked.
Also, as I was looking at your tutorial, Skarn, I wasn't able to search for groundeffects.bat and groundeffects_fix.bat, I have GEAdder and GEFixer and it works kind of weird, so if it is possible, where can I find the ones you are using, please?
EDIT: Alright, problem is in ground effects, either the GEAdder is weird or I need different fix.