>>I wanted to copy columns to the existing class (add them at the end). I already manually created all extra columns, but I did something wrong along these lines and now in run-time my grid somehow becomes null (IOW, when I reference it, it doesn't seem to work). Still trying to figure out what is the problem here.
>
>99% a wrong controlsource expression.
>Cetin

No, it was a human error again :) I was trying to reference the grid from the Load event :)