I tried running CCleaner on my Mac the other day (10.6.8 at the time) and it crashed. Previously it had worked just fine. I restarted and tried again and received the same result. I figured it was something to do with possible incompatibility with Snow Leopard and decided it was a good time to upgrade to 10.11 El Capitan. Well... CCleaner still does not run. It bounces in the dock for a bit then vanishes. Anyone deal with this issue on a Mac?