DSPBuilder 7.2 "hangs"

Hello

I'm working with matlab 7.4.0 (r2007a), Quartus II 7.2 and DSPBuilder 7.2. I want to try out the singen.mdl with my de2-70 board. It works fine, until I have to compile (generating vhdl) from the singen.mdl. At this point the program hangs-up.:(

There's no error in the messages-field. It just stops at: "Analizing Simulink model"

Any idea?

thx for your help..

P.S.: Quartus II and the de2-70 board are ok in my opinion, Im able to write vhdl and program the cycloneII...