The type initializer for 'Program' threw an exception. When retrieveing the COM class factory that failed with error 800401f9

Question

I got the exception mentioned in the title, and its inner exception contains this text:

Retrieving the COM class factory for component
with CLSID {609E6B75-5664-11D4-958C-080009D5C296}
failed due to the following error: 800401f9.

This problem occurrs on my 64 bit computer (Win 7), after I moved an entire solution (with 3 projects) from another machine (also 64 bit, Win Server 2008).

There was no problem on the source machine when the building was in progress (the target platform is Any CPU in both cases). The solution was built properly. But on my computer it throws an exception when I start the program.

The project refers to 6 DLLs (written in .NET, but I don't know them well).

I didn't find the mentioned CLSID under HKEY_CLASSES_ROOT\CLSID on my computer, but those are there on the source computer (but I don't know how they got there...). I kind of stuck. I would appreciate any suggestion, advice how to get through this. Thank you.