Crystal report export - working in VS 2010 but not on IIS 7.0

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OK guys, apologies if I sound lame, but, I have got to resolve this and I tried hard but now I think I need help looking at this with different set of eyes and thoughts..

Scenario:
ASP.Net application with web services (within the same domain) - C# as code behind using jQuery to call the web services.

A click of a button on the web application call a web service (within the same domain) which instructs the web service to export a crystal report to a PDF file to a directory within the same web directory (the service has permissions to write to the folder).

The web application uses windows authentication.
IIS is also configured to use windows authentication.

Problem:
When running the web application from visual studio 2010, the crystal report runs and exports the report to the required PDF file. When I host the same application on IIS 7.0, it gives me following error:

C#

System.NullReferenceException: Object reference not set to an instance of an object. at CrystalDecisions.ReportSource.EromReportSourceBase.ExportToStream(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.FormatEngine.ExportToStream(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.FormatEngine.Export(ExportRequestContext reqContext) at CrystalDecisions.CrystalReports.Engine.ReportDocument.ExportToDisk(ExportFormatType formatType, String fileName)

When I run the crystal report in Crystal Report 2008 application, it runs successfully.

Can anyone please guide me on how to debug this one as I know the error I am getting is quite generic..

Note: There are other crystal report files connecting to a different database (other than the one with the error above) and they all export out successfully on IIS.

Any help would be greatly appreciated.

Thanks.

Posted 17-Jan-16 14:25pm

Nayan Ambaliya

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Garth J Lancaster 18-Jan-16 21:18pm

You dont post any code so its a bit hard to tell - Im not an IIS/Web Wizard - the first thing I would do though, is to check that you are mapping the output path for your file correctly - using MapPath() or similar - hopefully someone else will shoot me down in flames and/or provide a better answer - in the meantime, you could update your question to show a bit more detail of the code, particularly setting up the output stream/path -> file ....

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