fixed test_modelcube
fixed test_modelcube

albireox/marvin,sdss/marvin,bretthandrews/marvin,sdss/marvin,bretthandrews/marvin,albireox/marvin,bretthandrews/marvin,albireox/marvin,sdss/marvin,sdss/marvin,bretthandrews/marvin,albireox/marvin