cannot remove empty file group

I have an empty file group, deleted/moved all the data in it. there is no data file left in it but still i cannot remove the file group.[color="#ff0000"]The filegroup 'FileGroupCommon' cannot be removed because it is not empty.[/color]when i check the partition scheme with the query below, it has no partition scheme id either.what should i do in that case? any oppinions?[quote]select partition_scheme_id,destination_id,a.data_space_id,name,b.data_space_idfrom sys.destination_data_spaces a right join sys.filegroups bon a.data_space_id = b.data_space_id[/quote]