I get a message that its from an older version and cannot be opened at the same time as the others. The other issue I had was one of these libraries which I upgraded earlier was opened while I had other ‘upgraded’ libraries opened. After the repair was complete, the folders were not in name order even though that was the sort selection in the list. So, I started the repair and was presented with the upgrade 3.6 message and then the repair commenced. These libraries had been opened prior to 3.6 without an issue. At this point, Aperture showed me a message for a corrupted library and that I needed to repair it. I closed them and reopened them by double-clicking on the file itself. I had to upgrade them which is explainable, but opening the libraries showed them empty. I opened 5 different libraries and each one presented a different problem. Today, I had to search for some photos in multiple libraries after upgrading to the 3.6 version of Aperture. A year ago, I split out my 10+ years of photos into libraries that carry one years worth of photos in each.
