attachmet fu thumbs not generated

Hi all,

I use attachment fu for image upload. In my model I define 3 thumbs. The orginal image is resized but the thumbnails are not. People have reported this issue before but I have not seen a solution yet.

I have this issue both on Windows and Linux.

Someonehas a solution for this? thanks Stijn

class Image < ActiveRecord::Base   belongs_to :album   has_attachment :content_type => :image,                  :storage => :file_system,                  :max_size => 500.kilobytes,                  :resize_to => '384x256>',                  :thumbnails => {                    :large => '96x96>',                    :medium => '64x64>',                    :small => '48x48>'                  }

  validates_as_attachment end