title: Unable to cast COM object of type 'System.__ComObject' to interface type for IRTDUpdateEvent
body: <p>I have spent a lot of time trying to figure out why I am getting the following error when trying to run RTD Server (Excel RTD Server) that I have developed when installing it via RegAsm. It works fine if I set the Register for COM interop flag on my dev machin, but not when install it using RegAsm.</p>
  
  <p>System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'IRTDUpdateEvent'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{A43788C1-D91B-11D3-8F39-00C04F3651B8}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).</p>
  
  <p>Any Ideas?</p>