Can't create new documents in STP3D

I can’t create new documents in Storyboard 3D. Whatever I do the Create Button does not activate. I reinstalled the program but it didn’t help. So I started to create new documents in Storyboard Pro 2 and open them in the 3D version.

Yes, I tried it all…

…didn’t work though

No, there are no special characters. I sent an email to the support address already a couple of days ago, but didn’t here anything so far. I use a 17" MacBook Pro (latest) as well as the latest MacOS Software btw.