Running 10.9.1. i've been having problems with upgrade to iTunes 11.1.5 for some time, I keep seeing it listed but when I hit update I see a SUPER short flash of the "download bar" and then it says "installed", but it's not. Interestingly when I look at "updates installed in the last 30 days" under that, i see iTunes 11.1.5 "installed" probably 20 times. Now when I try to install the 10.9.2 update I get the following error: "couldn't be saved because you don't have permission.(513)" I downloaded the "combo" update directly from apple instead of using the app store and ran it, but it almost immediately asks for a reboot and then when it reboots I'm still at 10.9.1 - nothing happens. I've repaired permissions, I've run repair disk. I'm about ready to just reinstall my OS from scratch I'm so frustrated, but that kind of thing is why I left windows about 10 years ago! Anyone with any help? The only thing strange I would say is that I have a TON of "ACL found but not expected on ...." messages during repair permissions, but from what I've read this is not a problem.