Hello everyone,
I just made account to reply here. Been a long time user of CCleaner and other products on both my Windows PC and Mac.
Yesterday, I could not successfully run CCleaner Mac 1.09.313 on OS X 10.9.4. It would crash as soon as I launched it. However, I have since updated OS X to 10.9.5 earlier this afternoon. I've found that the CCleaner Mac 1.09.313 runs fine on OS X.
My hardware configuration is MacBook Pro 4.1 (Early 2008):
OS X 10.9.5
Intel Core 2 Duo @ 2.5 GHz
4 GB 667 MHz DDR2 SDRAM
NVIDIA GeForce 8600M GT w/ 512 MB RAM
250 GB 5400 HDD @ 5400 RPM.
I hope this is helpful.