Okay, this is going to sound stupid, but if no one else comes up with a solution I would suggest that you mess with the code using alternative methods to achieve the same results. Personally I use CGI::Simple, but I've had even more problems with that module for some unknown reason than I've had with strait CGI;

For some reason on occasion I have severe problems with the "upload" routine of CGI. Instead I sometimes use the older method. 
my $fh = $cgi->param('file');

open FILE, ">whatever";
print FILE while (<$fh>);

[download]
Reading the file in blocks as you have it is a better solution, but this is pretty tried and true for getting it to work initally. CGI::Simple also provides: 
my $st  = $cgi->upload( $cgi->param('file'), ">whatever");

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In reply to Re: uploading a image file by archen
in thread uploading a image file by Anonymous Monk

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