If you can't load evox, then delete it, along with the ini and trainer files. Then get a fresh one and install it. Did you delete a trainer after turning it on, but not off? I heard of similar problems do to that. deleteing the evox files might help with yours, even if you didn't just delete.
Get the halo trainer by Acidflash & Dootdoo. They are somewhat "official". I do not know why xbins would state individual trainer releases.
http://trainers.evolutionx.info/index.php?dlid=342