I am working in bigbluebutton 0.8.1. I had setup the development environment in my local(ubuntu 10.04) and desktop sharing is working fine.
Later i created new bbb-desktop-applet jar, using the url https://code.google.com/p/bigbluebutton/wiki/081DevelopingBigBlueButton#Developing_Deskshare. And then moved the newly created jar to this location var/www/bigbluebutton/client in ubuntu machine and then restarted the server. I can able to create and join the room, but not able to share my desktop, getting below error. Already I added the url in exception site list in java control panel but still it is not working.i stuck up with this issue.