It seems that some german amiga-users had problems running this demo too - on
www.amiganews.de i found this description on how to solve the problem.. please check it out, and see if it works..
Please let me know afterwards

fusko^scenic
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The demo from the ADA archive is not working because its zipped
and the 'execute' bit is lost. So if you set the 'execute' bit
with the protect command:
protect Kheshkhash.wos RWED
then the demo will work.
Hans 'MazzelSiD' Wezenberg
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(hope you don't mind that i past'n copied what your wrote at
www.amiganews.de)