now using custom exception for missing sdss_access
now using custom exception for missing sdss_access

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