>>Hi Nick!
>
>Even without invoking This.Parent.GridHighLighter1.HighLight_Row(), it still gives me the error. In order to get rid of the error, I have to totally remove the ghl control class.

Hi Jess

If you don't call Highlight_Row() then there is only Dynamic expression in the grid column. Could you get the expression from the Debugger and send to me? (better to get the whole form, though :) Did you try to recreate that grid? Since it's the only one that complains, there might be something different about it. By removing GHL you just removed the Dynamic... expression from the grid columns.

You also may try to put this expression manually into a copy of that grid (with no GHL) and to another fresh grid and see if it works there. This is really not GHL error, this is something funny with the grid's understanding of the Dynamic... expression, which may look OK. I noticed that sometimes the grid complains about perfectly valid Dynamic... expression and then executes it normally, or vice versa, - working properly and then complains about the expression while being destroyed. That last one I fixed by resetting Dynamic properties to nothing on GHL destroy.