aperture library will not open
I installed Mountain Lion on Mac Book Pro, I have the latest Iphoto and latest Aperture(3). I only use Aperture, but for some reason it will not open, it asks me to upgrade library first with Iphoto 9.3. I then went in to Iphoto 9.3, and it says that library is in use by another application. I tried repairing the library by using the "command" "option" on both programs, but I get the same results. I have no back up and I ran out of ideas, someone please help!