#Help!!!
Others have suggested a good answer to your question, but to give a little
history… CP/M and MS-DOS have always had this "stdprn" device, like "stdin"
and "stdout". the Amiga doesn't. Just tack that code suggested in message
34295 into your program and it will work fine. Or, consider some other method
of directing that output – some users might want it to go to a file instead of
the printer.