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1216913 - Error Message: "...invalid class string" in Visual Foxpro 6 after updating to RDC 9


A Microsoft Visual FoxPro 6 application uses the Report Designer Component (RDC) 8 as the reporting development tool. The application runs successfully with the RDC 8, but when you update the application to use the RDC 9, the following error message appears:

"OLE error 0x800401f3 invalid class string"


The application does not run with the RDC 9 because the class string for the 'Crviewer' object needs to be updated.

Old class string:


New class string:




The following sample applications demonstrate the RDC Visual FoxPro



FOXPRO RDC VISUAL RDC CLASS STRING OLE ERROR RUNTIME UPGRADE CRASH FOX PRO Report Designer Component Microsoft Visual FoxPro 6 Invalid class string 0x800401f3 , KBA , BI-DEV , Business Intelligence Software Development Kits (SDKs) , How To


SAP Crystal Reports 9.0