I'm having a problem where I can't install anything. Last week, I downloaded software for my Harmony 880 remote that had an install package. When I went to install it, I was asked which drive, and then given the button in the lower right to install. I selected install, and the button was just greyed out after that. I didn't think much about it at the time. I figured it was just a corrupted download, and I'd re-download later. However, last night I was prompted with the iTunes update and it did the same thing. It shows in the software update, and I hit install at the lower right. The button goes grey once selected, and the install never launches. I tried a few other apps with install packages and the same thing happens. I've repaired the permissions and a ran some of the other typical solutions usually given here, but I'm still not able to install anything. Anyone ever seen this before?