CCleaner frozen, not responsive

System specs:

Windows 8.1 64bit

AMD FX-6200 Zambezi 6-Core 3.8GHz

Memory 10 GB Speed: PC3-12800 MB/s Type: DDR3-1600

CCleaner started acting up. It now triggers UAC, which it didn't before. I can start the program and 1 of 2 things will happen. 1) it will open and when I mouse over it, I get the busy signal from the cursor. 2) it will just sit there and can't click on anything. Frozen.

I had some of this go on with the last version too. The only way to stop the program is through Task Manager.

I've uninstalled/reinstalled rather than update. No change. File I downloaded was from Piriform.

Ccleaner is supposed to trigger uac unless the option to skip is checled. If it is already checked look at task scheduler to see if the ccleaner task is listed

That was interesting. I started CCleaner and stepped away from the computer. I forgot I had it running, so it was left running overnight. I got up the next day and CCleaner was clickable. I shut it down then restarted it. Guess what? No longer have problems. Program starts as it should and buttons are clickable.

Weird.