Info from the CCleaner developers this afternoon...
This morning we released a patch for CCleaner, as version 6.25.11131. We've done this to tackle a crash bug in the main 6.25 release (6.25.11039).
The crash we fixed was one that could affect users on start up of CCleaner. It would crash by mishandling a value that CCleaner stored in the Registry. When this happened, it would first change the Registry value and this meant it would not crash again when re-run. However, we saw that the bug was affecting a large number of users, so we decided to release a fix as a patch instead of waiting for our next monthly release.