Rails - Mar 2006 - File Upload Problem

works fine with webbrick

but when running through dispatch.cgi or .fcgi it fails with this error:

malformed header from script. Bad header=image/jpeg: 
/home/emh/phocab.com/public/dispatch.cgi

or if using fastcgi:

FastCGI: comm with server "/home/emh/phocab.com/public/dispatch.fcgi" 
aborted: error parsing headers: malformed header ''image/jpeg''

i repeat, it works fine with webbrick

here is my html:

<%= form_tag({:controller => ''phocab'', :action =>
''submit_photo''},
{:multipart => true}) %>
  <%= select("photo", "word_id", @words) %><br/>
  <%= file_field("photo", "photo") %><br/>
  <%= submit_tag "submit" %>
<%= end_form_tag %>

any ideas?

i am hosting my site with dreamhost if that helps...

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argh, another hour of searching and i discover that fastcgi chokes if 
your code has any puts statements...

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