I'm running Vista home Premium.
If I run a cleanup using CCleaner 1.39 maximized, it causes a "CCleaner has stopped running" error. But if I use the "CCleaner.exe" /AUTO" shortcut on my desktop, it runs fine and causes no error.
Here's the event:
Faulting application CCleaner.exe, version 1.39.0.502, time stamp 0x461fbd15, faulting module ntdll.dll, version 6.0.6000.16386, time stamp 0x4549bdc9, exception code 0xc0000005, fault offset 0x00091978, process id 0x8bc, application start time 0x01c781c88626670b.