IGNORE THIS POST. READ THE SECOND ONE ONLY. Threads were merged with different issues (which is stupid imo) and I'd like people to pay attention to the second issue. Thank you Hi, I own a mid 2012 Retina MBP and I'm having an issue for 2/3 weeks now. Everytime I try installing some app that installs through an assistant, I get the 'Installation Failed' message at the end. The app installs fine but I get it all the time! I formatted the MBP after that started happening (for other reasons) but that didn't go away and it still happens. All I recovered were the files (Movies, Music , Pictures and Documents). I'm talking about this screen (not on this app.. I just Googled and found this image): http://i.imgur.com/oaeJ5ig.png[img] Any idea? 10.8.3 btw.