Comments by dschakel (Top 2 by date)

I get a similar error using the VB version of the above code.
And yes, the CLSID is in the registry.
Creating an instance of the COM component with CLSID {9B78F0E6-3E05-4A5B-B2E8-E743A8956B65} from the IClassFactory failed due to the following error: 800700b7
Namely, the first time through all works as expected, however, the second time around the code is called the above error occurs. And, also, I have checked that all of the variables have been released, even going as far as putting everything on a new form and destroying the form before trying again.
When the application is exited, everything works as advertised.