I am trying to open existing activity and keep getting the following error:
Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.
Object reference not set to an instance of an object.
Does anybody have an idea how to fix this?
Answer by bubblehead712 · Aug 25, 2015 at 05:00 PM
I just had that problem. When opening existing project and the project has a category that does not exist in the pull down you have to create new one each time you open it. If you do not know what the existing category is look under the .xml file and look for the group.