From PSU's ITS: (posted Nov 30)
Due to a recent bug with Adobe Connect, a small number of users have reported that their meeting layouts are missing. We are currently working with Adobe to identify the affected meetings.
More information and any updates on this alert is provided at http://alerts.its.psu.edu/alert-1321
Action Required: If you plan to use an Adobe Connect/Breeze meeting space in the upcoming days/weeks, confirm that your layouts do indeed exist. Do this the day BEFORE your actual meeting time since it will take you time to recreate the layout and possible re-upload your missing content.