>>Just to prove a point, what happens if you remove the
>>IB_Edit that is attached to DESCRIPTION
>
> first, I have tried to simply detach the TIB_Edit from the table and
> the result has been the same. Then, I have physically removed the
> TIB_Edit from the form and the result has been the same.
>
> I haven't any other ideas <g> but anyway, this proves that the
> TIB_Edit is not the culprit. Maybe the TIB_Grid?

OK. In the absence of any feedback from Jason. How about
trying "DESCRIPTION = NULL" (properly coded<g>) in the
BeforePost event of the Query. THAT should appear when
monitoring the Post, and give an error.

I'm clutching at straws as I can't see a problem here, but
from what you are finding, I am sure SOMETHING is replacing
the NULL with a blank string, and hence your difficulty.
When I get to that stage, I tend to work around the problem
rather than relying on the bit that should work and does not
- usually simple Windows functions <g>

--
Lester Caine
-----------------------------
L.S.Caine Electronic Services