System: Mid-2014 15" Macbook Pro Retina HDD: 500GB Memory: 16GB CPU: 2.5GHz i7 Problems: 1. Since upgrading the OS, the system gets unusually warm. It is doing it now and I don't have much going on except Safari with two tabs. 2. Photos seems to work, but I don't really understand what is going on with the libraries. In Finder is says that I have a ~245GB Photos library and a ~250GB Aperture library. How can that be with only a 500GB SSD in the system? 3. Finder shows ~140TB available no matter what I have selected. I have a NAS, Dropbox, etc., but none of them have that much space. 4. Although totally unrelated to my MBP, the conversion/migration of the Aperture library on one of my iMacs hung up at 68% the first time and 55% the second time. It worked the first time on my MBP. I am hoping all this is a result of user error; I would appreciate any feedback from the community.