--- migrate_from_mantis.rake.original	2014-11-28 14:30:15.309721572 +0100
+++ migrate_from_mantis.rake.working2	2014-11-28 14:14:47.161757970 +0100
@@ -20,6 +20,7 @@
 require 'active_record'
 require 'iconv' if RUBY_VERSION < '1.9'
 require 'pp'
+require 'date'
 
 namespace :redmine do
 task :migrate_from_mantis => :environment do
@@ -136,7 +137,7 @@
     end
 
     class MantisCategory < ActiveRecord::Base
-      self.table_name = :mantis_project_category_table
+      self.table_name = :mantis_category_table
     end
 
     class MantisProjectUser < ActiveRecord::Base
@@ -313,10 +314,10 @@
                       :subject => encode(bug.summary),
                       :description => encode(bug.bug_text.full_description),
                       :priority => PRIORITY_MAPPING[bug.priority] || DEFAULT_PRIORITY,
-                      :created_on => bug.date_submitted,
-                      :updated_on => bug.last_updated
+                      :created_on => Time.at(bug.date_submitted).to_datetime,
+                      :updated_on => Time.at(bug.last_updated).to_datetime
         i.author = User.find_by_id(users_map[bug.reporter_id])
-        i.category = IssueCategory.find_by_project_id_and_name(i.project_id, bug.category[0,30]) unless bug.category.blank?
+        i.category = IssueCategory.find_by_project_id_and_name(i.project_id, bug.category_id[0]) unless bug.category_id.blank?
         i.fixed_version = Version.find_by_project_id_and_name(i.project_id, bug.fixed_in_version) unless bug.fixed_in_version.blank?
         i.status = STATUS_MAPPING[bug.status] || DEFAULT_STATUS
         i.tracker = (bug.severity == 10 ? TRACKER_FEATURE : TRACKER_BUG)
@@ -337,7 +338,7 @@
         bug.bug_notes.each do |note|
           next unless users_map[note.reporter_id]
           n = Journal.new :notes => encode(note.bug_note_text.note),
-                          :created_on => note.date_submitted
+                          :created_on => Time.at(note.date_submitted).to_datetime
           n.user = User.find_by_id(users_map[note.reporter_id])
           n.journalized = i
           n.save
@@ -345,7 +346,8 @@
 
         # Bug files
         bug.bug_files.each do |file|
-          a = Attachment.new :created_on => file.date_added
+          a = Attachment.new
+          a = Attachment.new :created_on => Time.at(file.date_added).to_datetime
           a.file = file
           a.author = User.first
           a.container = i