I am experiencing exact same issue described here on Talend 6.1.1. My Dev system has the zip file exported in commandline/exports folder. This file gets copied to QA server when the rule to migrate this to QA repo is executed. But it shows 'failed' status at the end and project is not imported. There is no error detail available. Checked repository manager DB - rules_execution_history table. That also does not have any additional info about the 'failed' status.
Was the issue identified and is this any configuration issue or Talend bug.