exome ref-align 'coverage_stats' error

[gatoravi]

Exome ref-align builds seem to generate a discreet error in the reference_alignment_coverage_stats step. The build still proceeds to completion and success but the error shows up in the logs in the reference_alignment_coverage_stats.*.err file.

277 2015-05-04 14:51:18-0500 clia1: DBD::Pg::st execute failed: ERROR:  insert or update on table "instance" violates foreign key constraint "instance_peer_instance_id_fkey"
    278 2015-05-04 14:51:18-0500 clia1: DETAIL:  Key (peer_instance_id)=(6dfd26945f1b4213b27d90d28ea44500) is not present in table "instance". at /opt/gms/B3W1Y66/sw/ur/lib/UR/DBI.pm line           888.
    279 2015-05-04 14:51:18-0500 clia1: 2015/05/04 14:51:18 Workflow::DataSource::InstanceSchema id(Workflow::DataSource::InstanceSchema): Workflow::DataSource::InstanceSchema: Error                executing SQL:
    280 2015-05-04 14:51:18-0500 clia1:  INSERT INTO workflow.instance (workflow_plan_id,workflow_instance_id,peer_instance_id,parent_instance_id,parent_execution_id,parallel_index,                 output_stored,name,intention,input_stored,current_execution_id) VALUES (?,?,?,?,?,?,?,?,?,?,?)
    281 2015-05-04 14:51:18-0500 clia1: PARAMS: 'c8aec8328be74a13ba49673970c388dc', '218d63b56e4d4da0b5fcb5b618414cfd', '6dfd26945f1b4213b27d90d28ea44500',                                           '98424092236d44c580deaba9e9d7f5a2', (undef), '1', '^E^H^C^@^@^@^@', 'Coverage', (undef), '^E^H^C^@^@^@^G^D^Q^XWorkflow::Link::Instance^C^@^@^@^F
    282 2015-05-04 14:51:18-0500 clia1: ^D6065^@^@^@^L__get_serial^H<81>^@^@^@^M_change_count^H<80>^@^@^@^Fbroken