How can I set the MSHFlexGrid to Nothing? i.e. Before I reload it I want to set it to Null or Nothing

The reason being:
When I load the grid initially there is no problems, but (only sometimes) when i reload it I get an Automation Error. I never get this error when I'm doing th initial load.

I have tried:
Grd.Collapse
Grd.Refresh
Grd.Clear
Grd.ClearStructure

You cannot:
Set Grd = Nothing
Set Grd = Null

Any suggestions?