hi, i''m trying to play with attachment_fu using imagescience, and...it works, partially... when i send the form the image is uploaded and it''s resized and the thumb made, and inserted in the db. But after this an error is occurred (every time): TypeError (singleton can''t be dumped): /usr/lib/ruby/1.8/pstore.rb:349:in `dump'' /usr/lib/ruby/1.8/pstore.rb:349:in `dump'' /usr/lib/ruby/1.8/pstore.rb:330:in `transaction'' /usr/lib/ruby/1.8/cgi/session/pstore.rb:81:in `update'' /usr/lib/ruby/1.8/cgi/session/pstore.rb:88:in `close'' /usr/lib/ruby/1.8/cgi/session.rb:324:in `close'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1184:in `close_session'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:1228:in `process_cleanup_without_flash'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/flash.rb:146:in `process_cleanup_without_filters'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:662:in `process_cleanup_without_session_management_support'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/session_management.rb:124:in `process_cleanup_without_components'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/components.rb:178:in `process_cleanup'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:435:in `process_without_filters'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/filters.rb:624:in `process_without_session_management_support'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/session_management.rb:114:in `process'' /usr/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action_controller/base.rb:330:in `process'' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:41:in `dispatch'' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:113:in `handle_dispatch'' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:79:in `service'' /usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'' /usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'' /usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'' /usr/lib/ruby/1.8/webrick/server.rb:162:in `start'' /usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'' /usr/lib/ruby/1.8/webrick/server.rb:95:in `start'' /usr/lib/ruby/1.8/webrick/server.rb:92:in `each'' /usr/lib/ruby/1.8/webrick/server.rb:92:in `start'' /usr/lib/ruby/1.8/webrick/server.rb:23:in `start'' /usr/lib/ruby/1.8/webrick/server.rb:82:in `start'' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:63:in `dispatch'' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/servers/webrick.rb:59 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'' /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in `require'' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in `new_constants_in'' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in `require'' /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/server.rb:39 /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'' /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'' ./script/server:3 -e:4:in `load'' -e:4 this is the controller: def aaaaa @image = Image.new end def bbbbb @image = Image.new(params[:image]) if @image.save flash[:notice] = ''image was successfully created.'' redirect_to :action => :aaaaa else render :action => :new end end model: has_attachment :content_type => :image, :storage => :file_system, :max_size => 500.kilobytes, :resize_to => ''320x200>'', :thumbnails => { :thumb => ''100x100>'' } validates_as_attachment view: <%= error_messages_for :image %> <% form_for(:image, :url => {:action => :bbbbb}, :html => { :multipart => true }) do |f| -%> <p> <label for="image">Upload An image:</label> <%= f.file_field :uploaded_data %> </p> <p> <%= submit_tag ''Create'' %> </p> <% end -%> table: create_table :images do |t| t.column :parent_id, :integer t.column :content_type, :string t.column :filename, :string t.column :thumbnail, :string t.column :size, :integer t.column :width, :integer t.column :height, :integer end it''s about 3 hours i''m trying to fix this, but without any result....and the code is the same i found here: http://clarkware.com/cgi/blosxom/2007/02/24 can anyone help me? please :( thanks -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---