Retrieving the COM class factory for component with CLSID failed due to the following error: 80040154

This desktop app is trying to use a Third party TypeLib in vb.net and when trying to instantiate this object:

Dim mycalWWList As New CALWorkitemWorkstepList

This error is produced:
Retrieving the COM class factory for component with CLSID{{F86DE171-2A5B-11CF-A2A6-08005AC10759}} failed due to the following error: 80040154

Oleview of the type library shows this:

[
  uuid(F86DE171-2A5B-11CF-A2A6-08005AC10759)
]
coclass CALWorkitemWorkstepList {
    [default] interface _ICALWorkitemWorkstepList;
};

I have read so much on this error and interoperability in general and so far
1.) retried "regtlib.exe"
2.) tried to regsvr32 any other .dll that shows up in procmon.exe but just produced the entry point not found error.
3.) tried tlbimp rather than just adding reference. tlbimp imported all with out error especially noting the coclass above.
4.) target x86.
4.) the legacy COM objects work fine in the vb6 application.

I have read all the similar posts here and nothing has help so far.

Would anyone have any further suggestions?

Tags: Visual Basic, COM