I am attempting to use a custom control for a live tile in my background agent. I have my live tiles successfully generating with user controls, but I now want to reference a custom control in my user control Xaml. At design time everything looks correct, no errors and I see the custom control presented in the designer, but when I run the app and the background agent runs, I receive this error:
Unknown parser error: Scanner 2147500037
The position noted in the error is the location in the Xaml where I have my custom control. If I remove the custom control the error goes away.
The custom control I am attempting to use (and its source code) can be found here: http://blogs.u2u.net/diederik/post/2013/11/05/A-Modern-UI-radial-gauge-control-for-Windows-Phone-8-apps.aspx
I do not believe there are any references in this custom control to anything that cannot run in a background agent, so I am wondering if there is some limitation in general to using custom controls in background agents for windows phone?
If anyone has any ideas as to the cause of this error, please let me know.
