I'm having some trouble creating a composite data type in galaxy. The composite type is created but is always empty. I've tried to put together a very simple test for the system. Attached are my input files as well as a screenshot of what I'm experiencing. I've registered my new data type in 'config/datatypes_conf.xml' <datatype extension="compositeDatatypeTest" type="galaxy.datatypes.composite_datatype_test:CompositeDataTest" display_in_upload="True" /> and I've added the attached module 'composite_datatype_test.py' to the 'lib/galaxy/datatypes/' area. The module is being parsed properly on start-up (log from the galaxy/run.sh) galaxy.datatypes.registry DEBUG 2015-05-16 11:13:51,869 Loading datatypes from ./config/datatypes_conf.xml galaxy.datatypes.registry DEBUG 2015-05-16 11:13:51,872 Retrieved datatype module galaxy.datatypes.composite_datatype_test from the datatype registry. galaxy.datatypes.composite_datatype_test DEBUG 2015-05-16 11:13:51,872 ######### Composite Data Test ############ I've tried running the system with my composite type set to 'basic' as well as 'auto_primary_file' and neither work. Under 'auto_primary_file', the html file isn't generated. Thanks in advance for any help! ~brian -- -- Brian J. Haas The Broad Institute http://broadinstitute.org/~bhaas <http://broad.mit.edu/~bhaas>