We have recently discovered a new problem where you might run into an error when trying to share any content in a meeting room, eg images, flash files etc., if you have changed the default HTTP port of the Connect server from 80 to any other port.
Environment : On Premise Installation
Method: Follow this blog procedure to change the default http port of the Connect server : http://blogs.adobe.com/connectsupport/configure-your-adobe-connect-8-server-to-override-the-default-http-port-80/
Result: On-demand contents work fine but any contents shared in the meeting room are blank
Workaround: Use only default ports to avoid this issue.
Additional Information: The meetings should launch fine but you might not be able to view any content in the meeting room. If you launch a content from content library it works fine. Changing the default http port is only supported for on demand contents as of now. Contents might not work if accessed from a meeting room.
We have logged a Feature Enhancement Request regarding this targeted as #3744993. Engineering is currently reviewing the feasibility of including this feature in a future release.