Well at least you guys can update to the nightly, I seem to get blocked off just after a connection is made, happens for a few days now. What the hell -_-
I want the nightly as well 
Stuff used to work with only occasional freezes on Ubuntu 10. Now the lwjgl canvas seems to be broken completely on most recent linux distributions. Be sure we are on the Linux issues and its top priority for us to fix this until the coming beta. As for the server issue, @sbook apparently is working on getting our server to another room and connection, the switch the server’s on now seems to have some issues and frequently needs to be restarted, probably a hint that its going to die soon…
Thanks for the reply!
When is the beta planned to be released?
Some time not too long from now 
@normen thanks for the update 
I’m searching for some kind of workaround, because I want to work further on my project, even without the working scene composer.
I wondered, if there a human readable/XML format, which I can edit to build up a scene and link to my models in the assets folder…
Any other type of workaround is appreciated!