>Weren't you reading my post? <g> I said a "very simple" form. This is a form based on the VFP Form class, so your suggestion is not an option. <g>
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>But the solution is simple! I forgot that the developers of the app (I modify it and curse it regularly) created an index on the table that I was opening that calls a UDF (boy, do I hate that). I did not have a SET PROCEDURE TO statement in effect at the time I issued the USE command. All fixed now, thanks.
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>>Recompile the class library the form is based on.

I too hate that. However, in the rare case where I've attempted to use a UDF in an index I made certain it was a standalone .PRG and it was in the path. No SET PROCEDURE required. Is that not possible for you?