Davey,
Removal of advanced options cured the problem. Thank you! as for understanding the program... I did not check advanced, and it is all greek to me. I purchased this program because it came recommended. It is the only registry cleaner I used that did not screw up my programs. the previous version ran great in the default settings, and I would think that this version would too. there is not too much info out there to understand what all those options are. I do recommend this program to others. again, thanks!