New Information, as i tested it with USB-connection
I installed the appropriate USB-Driver from Archos and can "access" my device from within the IDE.
E.g. when i press F5, my code will be compiled, the apk copied to the machine and it will be started. Hey, thats ok, as long as there are no heavy bugs in the code. For security reasons i wanted to use the Emulator, but this is another thread here in the forum.
BUT, when i start the Designer and click on CONNECT the designer on the devices comes up but stays empty and after some secs. the designer status on my notebook is disconnected.
That means to me, it doesn't matter which way i'm connecting, the problem is the same.