tried it out now with the amiga version and it works!

Can't reproduce it, but as you've already guessed, a division by zero error usually indicates the computer you're trying to run the game with is too fast. So you have three options: Make your emulated system slower, make your host system slower or just play the Amiga version.

Hello again! Another problem occured. Trying to start "Backstage" (you've got the AMIGA - Version in your dl-area; I use the pc edition) via dosbox 0.72, the game doesn't start. In fact the message "div/0" appears.

Can anyone help me please?

(already tried to alter the cycles although I know that dividing by zero is mathematically prohibited)