Gliffy in Confluence reports that it does not have a valid license when it actually does

Since the upgrade on 2013-09-30 (icebat-prod.78.0), Confluence Gliffys with valid licenses are reporting they do not have a valid license, and therefore refuse to work.

Note that Gliffy in JIRA appears to be unaffected.

Latest Update (2013-09-30 18:15 GMT+10)

We have rolled back the change that caused this bug. Please raise a support request if you continue to experience any problems.