Xcode simulator target iOS version names turned to hashes

Question

I'm on Xcode 6.3. I don't remember doing any special changes but after rebooting my macbook, target iOS version names were like this;

Does anyone know how to quickly fix this? Otherwise my last resort will be deleting all simulators and reinstalling them.

Answer 1

There are duplicated simulators installed. In Xcode just go to Window -> Devices and delete duplicated devices.