by
28. December 2009 16:20
AG_E_UNKNOWN_ERROR
Check all namespace declarations in your Generic.xaml. If you find something like this:
xmlns:local="clr-namespace:Your_namespace" you should add assembly reference as well:
xmlns:local="clr-namespace:Your_namespace;assembly=Your_assembly"
AG_E_PARSER_BAD_TYPE
Maybe you forgot add reference to assembly(and all its references) with custom control?
Error: Unhandled Error in Silverlight Application Code: 2103 Category: InitializeError Message: Invalid or malformed application: Check manifest
Right click on project, go to properties, and select the valid name under "Startup object"