When I'm trying to run iOS application in Xcode 6 in iPhone 6 simulator, I'm getting error Unable to run app in Simulator.
And error code is:
An error was encountered while running (Domain = FBSOpenApplicationErrorDomain, Code = 4)
Can any one suggest how to resolve it?
This worked for me:
iOS Simulator -> Reset Contents and Settings... -> Reset
referenced from Qiita: Unable to run app in Simulator エラーの対応方法.