Use the following steps to debug an app that does not start.

1. Deploy the ViewApp.
2. Go to the app properties in Visual Studio.
3. Go to the debug section.
4. Select "Start external program" and select the deployed ViewApp (View.exe).
5. Select Save and start debug.
6. Launch View.exe from the AVEVA OMI Application Manager.
7. Add a breakpoint, then step through the initialization of the app until you find the problem.