Hello,
This is LuaTeX, Version snapshot-0.20.0-2007120515 (Web2C 7.5.6) (Schwarzfahren.tex (/Dokumente/Writing/trunk/Writing/DerProzess/TeX/tex/prozess.kprj [more included files]
(Schwarzfahren.aux../../../../src/texk/web2c/luatexdir/tex/lin ebreak.c:215: failed assertion `vlink(alink(r))==r'
))Abort trap
I hope you don't mind some unrelated, off-topic jokes :)
I guess it fails because of the title (and/or content). You really aren't supposed to take public lines or connections (links) between them when "Schwarzfahren" :p
Well, the protagonists just talk about "Schwarzfahren", they of course have a ticket. So I think it a bit unfair of LuaTeX to simply *assert* they don't. Note that it also failed with a file called "UeberDemMensch.tex". Guess LuaTeX does not like Nietzsche either. But why? "What is Word to TeX? A laughing-stock, a thing of shame. And just the same shall TeX be to LuaTeX: a laughing-stock, a thing of shame." ;-)
Mojca
Jonathan