Add-In crash on start (win8), Connection Test positve (incl Flashplayer)

Hello,

my Adobe Connect Add-in Crashes after it has started and builds up MY Meeting Room. I can Access other Meeting Rooms, and People can Access mine as well. But since mine breaks, I can not use it...

Together with my IT department, we checkt the add-in, ran checkdisk, the connections, re-installed the add-in and also changed the Screen size. But still it breaks down.

Does someone have an Idea ?

I am running a Win8 Machnie with IE10 and have nothing changed on it since months besides installing Snagit (and a few days later, I found that the connect does not work). 

thanks

hoppeg_