CCleaner very slow startup

I have a problem where when I click on CCleaner, it will open the usual GUI, but the "Analyze" and "Run CCleaner" buttons are unclickable for about ~15 seconds. I can still change settings and run registry scans during the time when it not able to be cleaning, so it's not a "not responding" problem. Any help very much appreciated.

Thanks.

Rheese G