I tried to configure a JIRA server to test the new integration feature. I entered the details of a test JIRA instance running locally, and gave it a sample issue ID. When I used the 'test' feature, it spit out an XML error. I'm attaching the log file to this run.

I assume that this error is preventing the 'Changes' feature from working properly; I didn't see my check-in comments from Perforce there.