Toad Studio can't find columns like if the object is invalid

Every so often get the error “Toad Studio can’t find columns like if the object is invalid” when trying to do a Generate SQL -> Select command. If I view details on the table the Columns tab is empty while the other tabs are OK. The error goes away if I re-connect the database.

Anyone know what causes this error (it isn’t even correct English)

Thanks.

Malcolm

I’m having this problem too using IQ. Any thoughts??