Method Not found exception

Hi All,

I am trying to pass some data from json to web api controller. But I get the exception as "Method not found". In couple of other sites I see the solution is by adding tags:

<modules runAllManagedModulesForAllRequests="true"><remove name="WebDAVModule"/>      </modules><remove name="WebDAV" />

But above trick din't work. Can any one help me here?

Thanks

Vikram