FBSOpenApplicationErrorDomain code =4 error

Question

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:

Answer 1

Be careful if you skip installs. I accidentally changed Skip Install on the main target, when i meant to change it on a dependency . When changing it back I had to do a clean.

Answer 2

No need to quit the simulator or reset all content every time .

Just close the app on which you are working if running on background .

it works for me .

Answer 3

Open your app scheme setting and edit it as shown in attached screenshot, Actually you have to disable the "Launch Due to background fetch". Worked for me. Steps, 1. Select your target and select "edit scheme" 2. Select "Options" tab on right side of detail window 3. Uncheck "Launch Due to background fetch" checkbox.

Answer 4

I just quit the simulator , cleaned up the project and ran again it worked.

Answer 5

Just quit the xcode6.0 beta or else and run project again, it worked for me.

Answer 6

Disconnect hardware keyboard. In ios simulator main menu Hardware -> Keyboard -> Disconnect Hardware keyboard.