>I believe this to be an VFP problem, because using ConversionFunc to put " " in zero-length memo fields does not solve the problem. I have to put " " in zero-length memo fields before doing tableupdate().
>
>It is a real problem for empty datetime()s. Apparently Access does not support an empty datetime //: like VFP does. Access apparently wants it to be .null., but If I do that I get the error under discussion.
>
>Does anyone know if Microsoft is aware of this?

Hi Dennis,

Could you please "translate" everything what you said into VFP code?
A repro code helps to identify and solve a problem better than long description about what do you do and how it doesn't work.

Thanks,
Aleksey.