who's running this server?
its version is
and has a bug in that is fixed, happens on dataset
can you contact them and ask to upgrade. latest 4.1 would fix.
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.