I have had a report in Production for several years now. It is a simple report with a tablix and several groups. No charts or anything fancy. Last few months we updated to R2 from R1 2008. Last night out of the blue only
one of our reports stopped working. We use the ReportViewer to embed our reports in our system.
When the report is run in our system it says,
"The stream cannot be found. The stream identifier that is provided to an operation cannot be located in the report server database."
However, when we run the report form the Report Manager on the SSRS server it runs fine! It is just when run from a report viewer embedded in a windows form.
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