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>Two ideas:
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>1) Reports usually work better if you open tables previously, and don't use the report's datasession. If you already do this, make sure that the report doesn't include any table in its datasession.
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Yes, the report is using the tables from the form's datasession, we also checked there's no table in the report dataenv.

>2) Several users have reported errors if a grid was selected when running the report. If this is the case, try to select another object on your form, and THEN run the report.
>

Ok, this is the layout of our form. A grid, which the user dblclick and fire the click event of a print button from which the report is executed. We use this layout in all of our applications and this is the first time ever we get this kind of error. BTW, we're using VFP 6 with no service pack. Do you think that might be the problem?