I am getting this error when ever send port sends a message to WCF service.
Unable to cast COM object of type ‘System.__ComObject’ to interface type ‘Microsoft.BizTalk.Agent.Interop.IBTMessageBatchEx’. This operation failed because the QueryInterface call on the COM component for the interface with IID ‘{6C90EC04-4918-11D3-A242-00C04F60A533}’ failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).