We generate Crystal Reports in a C# .Net app. We originally used Crystal Reports Basic runtime for VS 2008 but that was incompatible with .Net 4 so we uninstalled that and installed SAP Crystal Reports for .Net 4 (32-bit and 64-bit). However, now we can't open files of type ".rpt". I downloaded Crystal Reports Viewer 2011 but it gave me this error when trying to open a file of type .rpt Please help.
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