Are you sure your webserver is properly set up to run the script as a CGI?

What if you take Acme::Bleach out of the loop and just try this?

#!/path/to/perl -w
print "Content-type: text/text\n\n"; #or text/html, whatever
print "Hello, world!\n";
[download]

Oh, you're missing a space after Content-type: in your sample, I think. Don't know if that could be the source of your problem or not...
--
Mike