Trying to watch the intro.sdm demo causes Soldat to crash, which means that enabling the Intro in Soldat causes it to crash. It seems to happen only to that specific file, not any other demo named "intro.sdm". Time for a new intro, perhaps?

Hmm...it has never worked for me.

The intro for unregistered users looks like crap. Why is that?

I mean, the polygons are invisible or something.

There were always problems with the intro, that's why I turned it off by default.