I disabled the UAC, reinstalled Crystal per your instructions successfully. However the reports still will not run and I get the same error message.

I think it must be the ODBC connection. I tried some diagnostics and I get am message that the specified driver cannot be loaded due to system error 126, although the driver (AdagioODBCv264.dll) is in the folder expected. I googled it (ODBC error 126) and found plenty of entries from application vendors, but absolutely no advice from Microsoft (typical). I found nothing helpful at all on the internet and I have spent several hours on it.