fixed error in _filterBox that was causing maps not to load when a synapse had a nil description
fixed error in _filterBox that was causing maps not to load when a synapse had a nil description

metamaps/metamaps,metamaps/metamaps,metamaps/metamaps,metamaps/metamaps,metamaps/metamaps_gen002,metamaps/metamaps_gen002,metamaps/metamaps_gen002,metamaps/metamaps_gen002