Leeg

Check if you have a windows system restore point before ESET detected a threat and messed everything up. It worked for me. Then update ESET to the cleaner build 1112.

I've encountered this issue today (yesterday ESET detected a possible Threat and that triggered it). However, I've been able to fix it by doing system restore to a point before ESET had detected any threat. Now I don't know if I should uninstall it or what... if it's going to damage my system when a threat is detected... it's quite dangerous :S