Process is hung in the debugger.(gdb) Xcode 4.2 SIGABRT Error

Issue 

Xcode 4.2 SIGABRT Error

Couldn't register com.domain.appsName with the bootstrap server. Error: unknown error code. This generally means that another instance of this process was already running or is hung in the debugger.(gdb)

Solution

Try the following things in the below order:

- Make sure all only one program is being debugged in XCode, close other running instances.

- Restart XCode, most of time this is take care of the issue.

- If you are running this on the device and is still not working restart the device and try again.

Also

The line UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); just means that an exception was thrown during the running of your program. This could range from a memory problem, to a simple runtime error. Look in the target debugger console; it will tell you where the error occurred.

Also by restoring the iOS simulator to factory defaults (Open "iOS Simulator" Menu in the upper left->Reset Content and Settings. Then quit the iOS simulator and Xcode, and then restart your computer. This will get rid of the other instance of the process.