Index: app/controllers/attachments_controller.rb
===================================================================
--- app/controllers/attachments_controller.rb	(revision 19920)
+++ app/controllers/attachments_controller.rb	(working copy)
@@ -105,7 +105,7 @@
       return
     end
 
-    @attachment = Attachment.new(:file => request.raw_post)
+    @attachment = Attachment.new(:file => request.body)
     @attachment.author = User.current
     @attachment.filename = params[:filename].presence || Redmine::Utils.random_hex(16)
     @attachment.content_type = params[:content_type].presence