Likewise, the default "Quick Clean" works for all 3 areas (although it seems to fail for "Privacy", but doesn't error/crash), but using the specific settings for each always crashes for Registry and Privacy at around 60 to 70%...
For the Registry area, I can make it crash even quicker, if I only select a few items ("found" or not) in the list, then it will crash between about 15 and 50%, doesn't matter what items are selected.
It's been happening for a few builds now (on two separate XP installs, same PC), two of which were 3.0.x, currently the 3.1 beta can't even get that far... it crashed (froze at the final "Saving configuration" part after the scan on reboot), now on subsequent reboots, or manually terminating the two processes, it just says "Loading..." for every area (yes I've tried "Repair"), consequently it (CSC.exe) won't terminate sometimes, so I've ended up with 2 or 3 running at the same time when trying to launch the GUI again, from then on the GUI just won't display until "Cleaner_Validator" process/service has been restarted.
Windows XP SP3 (32bit)
P4 2.6 HT Enabled
...and the only thing running that would effect it is CIS 5.3.1 (excluding standard Windows services, Apache httpd is the only other app running on boot-up), on the previous OS, I did try disabling CIS, and rebooting... to no avail, still crashed.
I'll attempt an uninstall/reinstall...
Edit: (also probably should have mentioned that 3.1 was installed over 3.0.x) After uninstall/reinstall, 3.1 doesn't crash for either Registry or Privacy sections, initially, or any subsequent runs.