The design time structure is the same as the dataset at runtime becuase they are one in the same. So, my thought is that there is a setting in IIS that is preventing the report from working. The website is down not up right now so I will look at that article later. Thanks for your help.

Jim

>OK, I thought so, but wanted to check.
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>You may also want to verify that the design time source structure is the same as what you're passing at runtime (tablename and column names). Apparently that error can also occur if the tablename and/or contents doesn't match what the report is expecting.
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>Kevin