Here is a excellent resource for Troubleshooting on Windows Mobile.This is documented very well..worth to read it for windows mobile developer.

Part 1
http://blogs.msdn.com/hopperx/archive/2009/03/05/troubleshooting-guide-part-1.aspx

Part 2
http://blogs.msdn.com/hopperx/archive/2009/04/21/troubleshooting-guide-part-2.aspx

Cheers..

Suresh Behera