@Admin Thanks for the suggestion. I sincerly appreciate it. The elementary measures, nearly in all cases, is to re-start the system, run chkdsk, see if anti-virus is in a good mood today, update your drivers,… So, chkdsk and all other “Elementary” measures have already been taken. I believe, as no other application has hiccupped in this manner EVER, I think the issue is an isolated one pertinent to the software, conflict with other programs or related to some extremely technical issues (registry, services, permissions,….) that I do not know much about and since the issue is just applicable to THIS program have no desire to investigate any further. If you read my other post(s) at http://forum.wisecleaner.com/index.php?/topic/6436-cannot-backup-full-registry/, you must be aware that due to the fact that registry entries are modified many times, even in one day, particularly if settings of programs are changed, vital files/folders are deleted or moved, uninstall, re-install, and new install, … I am not a fan of full registry back-up. It is a mere useless feature unless one does not do much with the system but, it was a feature included with Wise Registry Cleaner and since it exhibits hiccups in my case, I am reluctant to check other features. You are correct, IOBits and JV-Powertools in addition to many other system enhancement and registry cleaner programs DO NOT offer full registry back-up and one needs to wonder----WHY is that?