Insufficient Base Table Information For Updating Or Refreshing

I've got a ADODataset that is created from a indexed Paradox table.
When I attempt to insert a new record I get the message 'Insufficient
Base Table Information For Updating Or Refreshing' and the insert
fails.  I have other adodatasets based on Paradox tables that work
just fine.

Can anyone tell me why I'm getting this message?

Thanks,  Craig