Doing a search on "Invalid TLV record" at http://support.businessobjects.com/search/default.asp?ref=default.asp_shortcuts yields several results. It generally occurs when there are missing runtime components, but there could be other reasons.

>Anyone have a solution to the above error?
>
>It happens at a client on this line: This.crReport = This.crApplication.OpenReport(This.ReportFileName, 1)
>
>I've read the messages here on invalid TLV record. As far as I can see all required files are installed and registered on the clients PC.
>
>The error in full is:-
>OLE IDispatch exception code 0 from Crystal Reports ActiveX Designer: Invalid TLV record.
>
>Any suggestions?
>
>Cyril.