just to add one more thing here,
The 'IIS APPPOOL\Mono' account is
not granted 'Write' permission on the 'C:\Users\Dagon\Documents\My Web
Sites\Mono\MonoX\ApplicationData\Cache'. Although this is not a fatal error,
it's highly recommended that you configure these permissions.
@Charles - this is expected behavior, in order to run the application with proper permissions you need to change the application pool account to one with proper permissions.
: WebPI & WebMatrix have old MonoX version so we recommend that you use latest version from our site or beta version that we can send you.