Hi I'm using a 3.1 i5 quad core 27" iMac, with Lion. Everything has been fine since I got it last week but I installed CleanMyMac and ran a few scans and after that I tried to move some files I downloaded off my desktop into another folder I created where I keep all mt stuff. Now everytime I try and move or copy a file into that folder I get an ERROR 0 What could be the problem here? I created a new folder and was able to move those files no problem. Thanks for looking. And if you need more info please just ask me.