Naomi --

(1) Yup, I use TableName.FieldName

(2) Hmm, yes, I could try that .. what would that prove, do you think?

(3) Lockscreen -- no, that doesn't seem to be it either. (If it were, I would expect other grids on other pages to misbehave as well.)

Curious, eh?

>>Naomi --
>>
>>All my grids have a "create" method which re-creates the underlying grid, sets the recordsource, deletes any existing columns, and then adds the columns that are necessary.
>>
>>I have many cases where the columns to be displayed are dependent on various user-enter parameters, so I have found it most convenient to always handle grids this same way.
>>
>>BTW, this problems occurs the first time I activate a page, so that's not an issue here.
>>
>When you specify column's controlsource, did you specify it as TableName.FieldName as opposed to just FieldName?
>
>Also just for the test, would it be possible for you to try to create a copy of this form with grids defined in design-time and see if the problem persists?
>
>Do you have unmatched LockScreen somewhere?