Knime Analytics Platform 2.11.0

I downloaded (Windows, 64 Bit installer) and installed the Knime Analytics Platform 2.11.0 on Windows, 64 Bit.

If I try to start the it, it shows the splash screen and then hangs up.

Has anyone an idea? Or is there a log file, where we can look up, what's the problem?

 

Is it posssible that KNIME is prompting for the Workspace selection in an additional (hidden) dialog?!