Weird Production Errors with Magic/XML


I've been trying to use the Magic/XML library ( taw/magic_xml/) to parse some large XML files for my application. Everything works fine on my Mac Mini that I'm developing on, but as soon I try to deploy to production settings, I get this error:

XML is not a class #{RAILS_ROOT}/lib/magic_xml.rb:374 #{RAILS_ROOT}/app/models/usb.rb:5 #{RAILS_ROOT}/app/views/dashboard/index.rhtml:11:in `_run_rhtml_47app47views47dashboard47index46rhtml'

Anyone have any ideas as to what would be causing this or how to go about troubleshooting?

Thanks for taking a look, Tony