Hi Cetin

>You say iID is 11 but who knows. Alias.

I added the alias to the iID field name but no change.

>Check for existence of coldemaildt

Where would you suggest because this is happening something before Grid.Destory() and I don't know where. I tried to set step on in one of the thisform.grid.colemaildt.txtemaildt.gotfocus() of the grid and then tried to quit the app, but at the time the error message appears there is no code nor call stack that makes sense (both are stuck in the thisform.grid.colemaildt.txtemaildt.gotfocus()) Though I must say the form and the grid are very much visible so I guess they exist plus even if false the code and call stack shows the column's textbox.

If you have any suggestion.