Index: app/controllers/projects_controller.rb
===================================================================
--- app/controllers/projects_controller.rb	(Revision 1894)
+++ app/controllers/projects_controller.rb	(Arbeitskopie)
@@ -55,7 +55,7 @@
                             :conditions => Project.visible_by(User.current),
                             :include => :parent
     @project_tree = projects.group_by {|p| p.parent || p}
-    @project_tree.each_key {|p| @project_tree[p] -= [p]}
+    @project_tree.keys.each {|p| @project_tree[p] -= [p]}
   end
   
   # Add a new project
Index: db/migrate/078_add_custom_fields_position.rb
===================================================================
--- db/migrate/078_add_custom_fields_position.rb	(Revision 1894)
+++ db/migrate/078_add_custom_fields_position.rb	(Arbeitskopie)
@@ -1,7 +1,7 @@
 class AddCustomFieldsPosition < ActiveRecord::Migration
   def self.up
     add_column(:custom_fields, :position, :integer, :default => 1)
-    CustomField.find(:all).group_by(&:type).each_value  do |fields|
+    CustomField.find(:all).group_by(&:type).each  do |fields|
       fields.each_with_index do |field, i|
         # do not call model callbacks
         CustomField.update_all "position = #{i+1}", {:id => field.id}
Index: db/migrate/072_add_enumerations_position.rb
===================================================================
--- db/migrate/072_add_enumerations_position.rb	(Revision 1894)
+++ db/migrate/072_add_enumerations_position.rb	(Arbeitskopie)
@@ -1,7 +1,7 @@
 class AddEnumerationsPosition < ActiveRecord::Migration
   def self.up
     add_column(:enumerations, :position, :integer, :default => 1) unless Enumeration.column_names.include?('position')
-    Enumeration.find(:all).group_by(&:opt).each_value  do |enums|
+    Enumeration.find(:all).group_by(&:opt).each  do |enums|
       enums.each_with_index do |enum, i|
         # do not call model callbacks
         Enumeration.update_all "position = #{i+1}", {:id => enum.id}
Index: config/environment.rb
===================================================================
--- config/environment.rb	(Revision 1894)
+++ config/environment.rb	(Arbeitskopie)
@@ -5,7 +5,7 @@
 # ENV['RAILS_ENV'] ||= 'production'
 
 # Specifies gem version of Rails to use when vendor/rails is not present
-RAILS_GEM_VERSION = '2.0.2' unless defined? RAILS_GEM_VERSION
+RAILS_GEM_VERSION = '2.0.4' unless defined? RAILS_GEM_VERSION
 
 # Bootstrap the Rails environment, frameworks, and default configuration
 require File.join(File.dirname(__FILE__), 'boot')