I just upgraded from a previous version to the latest from http://sourceforge.net/project/showfiles.php?group_id=176809&package_id=313565&release_id=667229.
I am running Moodle 1.9.4
Now I only have a few functions available when I start the meeting.
I have a screen cast where I try to show the problem - please look at:
I found a solution.
I erased the dimdim in the Moodle database and reinstalled dimdim - now it all seems to work fine.