I've had trouble with this too. The solution I found was to use the upload() method to get a filehandle: 
my $filename = $query->param('filename');
my $fh = $query->param('file');

# clean $filename, especially in Taint mode

open(OUTPUT, '>' . $path . $filename) or carp "Can't open $filename: $
+!";
select(OUTPUT);
print while (<$fh>);

[download]
Ugly, demo code, but that technique worked in my tests. See Re: CGI.pm file upload freaking me out for more information.

In reply to Re: strange CGI.pm behavior by chromatic
in thread strange CGI.pm behavior by flocto

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