After successfully compiling the project in Xcode 6, I am unable to run it in the simulator with the above mentioned message. I did all the possible research, tried everythi
There are different things that can cause this. Looking in the console may well give you a clue.
In my case - the issue was an extension built before I changed the name of the product. Xcode didn't clear the old one out, then got stressed at two extensions with the same bundle id.
(Deleting the build folder fixed my particular issue).