Yeah, the registering to the network got stuck. I re-started the SAFE Laucher again and it worked fine. Next I did the Demo App and it worked well. Able register a domain and uploaded my own website. David said there are still some 5 sec. delays in the software for the Devs to see what happens. They also didn't optimize for speed yet. Check the topic on the forum. People try to run it on different Linux systems as well.

Here's a video with a walktrough for people on Windows.

Safe Launcher Walkthrough