That's might be a line ending issue. When I create a script on Unix, I can run it on both Windows and Unix, however if I create it on Windows, it won't run on *nix. If you're having problems running a script created on Windows on your Unix boxes, here's a quick fix for you... open the script in vi: vi script.pl, and immediately type the following after it opens(include the colon):

:set ff=unix
[download]

...then hit ENTER, then type :wq and ENTER again. That'll set your line endings to use Unix style endings and will (should) work on both platforms.

-stevieb