This is related to issue JENKINS-2508 "JIRA plugin not updating JIRA when perforce plugin used". I looked at the JIRA plugin and it fails to update the JIRA issue because an exception is thrown when calling getAffectedFiles() from the Perforce plugin, but the interface is not implemented yet. I added handling the exception in the JIRA plugin and now it at least creates a comment with an empty file list, but I'm new to this and don't feel comfortable to implement the interface in the Perforce plugin. It would be great if someone else could take care of it who knows what he's doing

This is the missing implementation: hudson.scm.ChangeLogSet.Entry.getAffectedFiles()