rmagick and acts_as_attachment error

./script/…/config/…/vendor/rails/activesupport/lib/active_support/dependencies.rb:248:in `load_missing_constant’: uninitialized constant Magick::Enum (NameError)

The above error occurs each time I try to boot webrick or mongrel. I’m kind of lost as to where to search for the cause of this error. My install of imagemagick and rmagick wen smoothly. I’m on fedora core 4 with edge rails. Thanks for any help