I called a webservice for fetching items in fullcalendar. The method is never called and firebug gives this error:
*\"POST [http]://localhost:50536/FullCal
I recommend you use Fiddler to look at the network traffic and see what's being sent to the service. Then figure out why it's being sent that way.
It seems likely that you really are somehow sending a parameter named "methodname".