What would suddenly cause a subclassed grid to

1. start complaning about a perfectly valid dynamic backcolor expession and

2. fail to refresh the controls in the grid -- that is the default refresh() behavior of the grid is not occuring.

This started today in a grid that I have used for 6 months without problem. I have...

1. Reinstalled VFP
2. Reinstalled the derived grid class from a backup
3. Reinstalled the derived grid class from an older backup
4. Pulled what little is left of my hair out...

Nothing...

Any insight would be a blessing.

Thanks,