I'm having trouble getting KQ7 to work on DosBox.

I drop the install file on DOSbox, it installs, then it gives the prompt sierra.exe. I click enter and it starts the game. It only shows the intro for a minute or so, then quickly cuts out of the game and back to the dos prompt screen saying 'we're sorry, you've encountered an internal game error.'

Also, when I downloaded the zip file there was only the DOS batch file for the install, not the game itself.