When viewing the Event in the the Donation > Events menu, there are "Overview" and "Attendees" tabs. When clicking on the "Attendees" tab, the frame goes completely blank and nothing is displayed/loads. I have tested this in Chrome and Firefox with the same result. Cleared the cache, no change. We can still view attendees by viewing individual donations in detail, but this is tedious, especially if we have donors submitting via a different form during the same period.