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Invalid Procedure Call or Argument when calling RegisterServer with SLIK-DA

I am getting the following error when I call the RegisterServer method on the SLIK-DA object. Run-time error '5'; Invalid Procedure Call or Argument How can I resolve this error?

The main cause of this error is that your ProgID is the not in the correct format.  ProgIDs should always be in the format:

VendorName.OPCServerName.Version


Example: SWToolbox.OPCServer.1

We have specifically seen this error when the user leaves off the version number at the end.  The simple fix is to add a .n where n can be any number and then try to call RegisterServer again.