"end of file found" in apache upload

[Javier Gracia Tabuenca]

hi.

I have a problem whit upload files.
I have the last version for this packages:

CGI           3.20
libapreq2     2.07
HTML::Mason   1.32

and I use a simple code in mason for upload:

<%args>
     $fitxer => undef
</%args>

   <% $content %>
   <form METHOD="POST" ENCTYPE="multipart/form-data">
   <input type="file" name="file">
   <input type="submit">
   </form>

<%init>
 my $content = '';
 if($fitxer){
   use Apache2::Upload;

   my $req = Apache2::Request->new($r);
   my $upload = $req->upload("file");
   my $size = $upload->size;

   $upload->slurp($content);
      
 }
</%init>

But when I try it in the browser it reply me "End of file found".

I read that I needed change MasonArgsMethod 
<http://www.masonhq.com/?MasonArgsMethod> to "CGI", but it change nothing.

thanks.