Q: Unable to determine compiler to use - the abstract compiler specification is missing from this Xcode installation Hi I have iMac with OS X Yosemite version 10.10.3 and I've installed the last Xcode 6.3 beta 2 with Swift 1.2 and when I try to Run the App I receive: 
Check dependencies
Unable to determine compiler to use - the abstract compiler specification is missing from this Xcode installation.
and everytime when I open my project with Xcode I receive a warning:
warning: no rule to process file '/Users/Bogdan-iMac/Desktop/My App/My App/My_App.xcdatamodel' of type wrapper for architecture x86_64
and I have to open Build Phases in Compile Sources I have to remove My_App.xcdatamodel and add it again to prevent the warning
Link in Apple Dev Forums: https://devforums.apple.com/thread/263126

A: I had the same problem. Restart helped, even under Yosemite 10.10.2

A: I had the same problem here. The error disappeared after upgrading Yosemite to version 10.10.3 (14D87h) from today.

A: restart XCode-Beta helps me! And my Yosemite is 10.10.3 Xcode is Version 6.3 (6D532l)
