Why would the Agile Version Report macro just stop working?

[Marit Luersen]

I have been using the Agile Version Report macro on a Confluence page for a few weeks now, which I enabled by adding the external gadget from JIRA.  This past week it has been failing to load.  This happens on the existing macro I had on a page as well as anytime I try to insert the macro.  I deleted and re-added the gadget url in the External Gadget setup.  I tried both adding the individual gadget as well as the JIRA Gadget Feed.  All other external gadgets are working.   The Agile Version Report macro works fine in JIRA Dashboards.  Anybody know of why this started happening and how I can fix it?  Thanks!