"Operation not implemented yet" Error

Question

I have an asp.net web application. When I try to export a report via crystal report I get following error :

Error in File C:\DOCUME~1\User\LOCALS~1\Temp\MainReport {7F8A9E9E-DD47-4D17-A44D-68D9478A792C}.rpt: Operation not yet implemented.

I use this code to export report :

    ReportDocument reportDocument = reportSource.ReportDocument;
    reportDocument.SetDataSource(dt);
    Response.ClearContent();
    Response.ClearHeaders(); 
    reportDocument.ExportToHttpResponse(ExportFormatType.PortableDocFormat, Response, false, "Report");

Thanks in advance.

Answer 1

Does your report have non-standard fonts? If so, that could be the problem. See link text

Answer 2

I had a similar problem, I found the description of the problem in :

https://support.microsoft.com/en-us/kb/3102429

The solution of the problem can be found at:

https://blog.brankovucinec.com/2015/12/10/kb3102429-causes-crystal-report-export-to-pdf-to-fail/

Notes:

• This problem occurs when you use a DataSet as a source of report data. Sql queries and StoredProcedures this error did not happen
• This problem occurs when you will export the report to PDF using a DataSet as a data source, if you try to export to Excell and Word this does not happen.

You must remove this update from your computer or server (if this problem).

1: Go to Control Panel

2: Select View installed updates

3: Search the KB3102429 update, And Then select Uninstall.

If you can not uninstall this update:

Issue only manifests with export to PDF using DataSet (Word and Excell not affected), only if the report contains TNR or Arial (no other fonts found to cause a problem but not every font was tested) and only with the versions of fonts, if you change the fonts on your report to SergoeUI your report (maybe) will work.