WP7 – “App won’t run from app list” Fix

I have been working on my WP7 app now for around 6 weeks.  I’m not completely happy with it yet but I have good set of  base functionality.  For the first 4 weeks I couldn’t run my app in the emulator from the start screen or the app list.  I had to start the app from Visual Studio.  When I clicked the icon the screen would flash and return to the list/home screen.  I assumed this was an issue with the emulator but when I got a developer device I had the same issue.

I consulted with the connect.microsoft news group and at first we thought it was an assembly signing issue but one by one I eliminated them all as the cause.  Out of desperation I started a new project and slowly moved all my code to it and what do you know, it works.

I still have no idea what the problem was but at least its resolved.   Please leave a comment if your also having this issue and this fixes it.

6 thoughts on “WP7 – “App won’t run from app list” Fix

  1. Yes, I’ve had this before too! Very frustrating, and unfortunately like you, I’ve found the only REAL and dependable solution is to recreate and do massive cut’n’pastes. Not good IMHO, I’m hoping someone from MS is looking into this! I’ve also wanted to blog about it but I just don’t have anything to say other than, like you, I got this prob but can’t fix it nicely. Misery likes company? :< Good luck!

  2. I came across this post with the same problem. I was about to start porting code to a new project and went to the project settings.

    Turns out something had caused the ‘Startup object’ to be cleared on the Application tab. Put it back to the application object and all is well.

    Hope this helps someone in the future.

  3. Howdy, I think your blog may be having browser compatibility problems.
    When I look at your blog in Safari, it looks fine however, when
    opening in IE, iit has some overlapping issues.

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