I've built a Windows Phone application and was successfully able to get it into the store. I made a few improvements and created a Windows Phone 8 version and submitted the update. However, it keeps failing the certification process (3 times now). I found one issue with the Windows Phone 7.x version and was able to fix that, but now I'm just getting an error that my application fails to run with a silent failure.
I've tried everything I can think of in emulators and devices, but I can't seem to get the failure to happen. It would really be nice if Microsoft would give you more information. Since they don't, I was wondering if anyone had a good list of all the different condition, devices, and steps you go through to test your application before submitting it.
So what are the recommended testing scenarios to test an app in before submitting it to the store?
(What would be really nice would be to see what steps Microsoft uses when they test an app)
BTW - I should mention that I've used the certification tool and the simulation dashboard in my own testing.