Upgrading from 8.0.0.27 to 8.1 error: Data is Improper

Upgrading from 8.0.0.27 to 8.1 error: Data is Improper

Error reads: Migration is not started as Data is Improper.  Some of the Products [MS Vista Business SP1] are configured without Product Type, please contact.....bhah blah blah.

I've tried changing the Product Type to something else but the error persists.  I cannot even delete it because it tells me Workstations reference it even though I can find no such reference.

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