vb crystal reports please help!

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while loading a project up in VB that contains DSR
files, I get the following errors:

CRVIEWERLiBCtl.CRVIEWER of Control CRVIEWER1 was not a loaded control classfilename.DSR could not be loaded

I've also noted that in VB under the Project menu, 'Add Crystal Reports' is no longer listed. So I'm not able to add anymore reports to my project.