Is a COMException of 0x80040154 always 'Class not registered'?
Does a System.Runtime.InteropServices.COMException of 0x80040154 always mean that the class isn't registered? I'm getting a COMException which says "Retrieving the COM class factory for component with CLSID {29131539-2EED-1069-BF5D-00DD011186B7} failed due to the following error: 80040154." It's trying to load Interop.Domino.dll which is a reference I got from the COM tab of Add Reference called "Lotus Domino Objects" which points to domobj.tlb in the Notes program folder. I wrote the code years ago - it's the only thing I've ever done with interop and it's fair to say that I never really got