This topic is applicable only to Registry Healer version below 5.0
When Registry Healer is correcting registry entries it creates a temporary backup file in system temporary folder. Perhaps, there're problems with temporary file. Please empty temporary folder before running Registry Healer:
1. Click to the Start Menu -> Run... , type %temp% in the box and click OK. This will open temporary folder in explorer window. Delete unnecessary files.
2. Reboot your system.