The problem hasn't returned, Nancy. It seems that having two SQL linked dropdown combo boxes with the same cursor name was causing it. I simply changed one of the names.

>You're welcome.
>Please let us know if it resolves the problem.
>
>>Thanks for your interest. The error comes up when changing pages of a form. Each page has a number of cursors linked to drop down combos and grids - I have just checked and found that a dropdown combo on each page creates a cursor of the same name - that may be causing the problem, so I'll do some more testing.