Hi, for some strange gff files i get the following error: Traceback (most recent call last): File "/media/data/web/galaxy-central/lib/galaxy/jobs/runners/local.py", line 149, in run_job job_wrapper.finish( stdout, stderr, exit_code ) File "/media/data/web/galaxy-central/lib/galaxy/jobs/__init__.py", line 373, in finish dataset.datatype.set_meta( dataset, overwrite = False ) #call datatype.set_meta directly for the initial set_meta call during dataset creation File "/media/data/web/galaxy-central/lib/galaxy/datatypes/interval.py", line 829, in set_meta if valid_start and valid_end and start < end and strand in self.valid_gff3_strand and phase in self.valid_gff3_phase: UnboundLocalError: local variable 'start' referenced before assignment start and end are not defined when elems[3] and elems[4] are '.' Attached is a patch that should fix it. Cheers, Bjoern