I am trying to run the H!Zone (a shovelware collection of Heretic and Hexen levels) launcher on DOSBox 0.74. I'm able to load cdhelper.exe and get to the welcome screen, which tells me to press a key or the left mouse button. But when I do so, the program crashes with the following message:

1Runtime error 005 at 0000:45E9

Anyone know how to resolve this?

I'm using a mounted disc image file, but I doubt it makes a difference.