these two errors started to appear in version 5.72.xxxx and in 5.73.xxxx is still there. Prior to these versions no such error was present.
When I go to 'Options -> Advanced' and try to check the 'Skip User Account Control warning ' I'm getting in a new window a 'The system cannot font the path specified' error.
When I try to check the 'Save all settings to INI file' in the same menu, a window pops up telling: 'Failed to save settings due to a permission error'
I reinstalled the two versions older (CCleaner 5.71) and the bugs disappear.
I'm using currently the latest CCleaner.
I attacked two screenshots with the errors.