I have a project that runs on Windows Phone 8 and Windows Phone 7.5.
It works fine on 8 devices in all cases, but on Windows Phone 7.5 it crashes on startup with following message (only if installed from store):
If the application is built on PC and uploaded to device it works fine. I tried numerous things but nothing helped.
Well, my assumption is that your XAP file does not contains all the DLLs needed. Make sure the references to those DLLs indicate
CopyLocal=True
. Also it would be nice if you can share the beta link to check your stack traces.P.S. this may help:
Troubleshooting Windows Phone App Problems that occur after Submitting
Your Windows Phone 7/8 application tests fine, but fails after publishing to Marketplace or after private app distribution