Hi Liam,
I've had this same problem. It occurred when the print dialogue box went away reactivating the underlying screen which contained bound objects (expecially a grid!) Fox would then switch alias to redraw the object(s) wrecking the selected alias for the report.
I can't remember exactly what I did, but basically you to prevent the forms activation during printing. eg using a custom print dialogue modal window.

HTH

>Hi all,
>
>I have an odd problem with the reporter that someone may have come across before. Any ideas very welcome...
>
>Situation
>1) Numerous tables open...
>2) SELECT blah blah blah into cursor CurRep
>3) REPORT FORM blah blah blah
>4) Report is fine until I move to the next page or zoom in or out then
>I get an error message not found
>
> is one of a few variables in the report that is causing the error.
>
>After investigating (and much hair pulling) I discovered that VFP is SELECTing a table other than the result of the SQL statement (CurRep) DURING the report!
>
>Before the REPORT FORM command I inserted a messagebox(alias()) command to confirm that the correct table is, in fact, selected. A further messagebox(Alias()) command after REPORT FORM (and usual errors) will show that a completely different table is selected.
>
>Explicitly SELECTing the Cursor after the SQL statement makes no difference.
>
>During debugging I also discovered that if I issue a BROWSE before the REPORT FORM command, everything will go fine and the correct table will remain selected.
>
>Anyone seen anything like this before ??
>
>TIA
>
>Liam