Tray Notification Cache Not Being Reset

CCleaner v4.14.4707 on WIndows 8.1.

Even though I have "Tray Notification Cache" ticked, CCleaner is not resetting the cache.

After running the cleaner I rebooted: the cache is the same, ended the Explorer task and restarted it: the cache is the same.

Any ideas why this isn't working??

James

It may help to try it a second time. I experienced this in the past.