diff --git a/app/controllers/managements_controller.rb b/app/controllers/managements_controller.rb
index e7273b94..e4a51b26 100644
--- a/app/controllers/managements_controller.rb
+++ b/app/controllers/managements_controller.rb
@@ -2967,7 +2967,7 @@ end
                 member = course.course_members.where(:user_id => user.id, :role => member_role).first
                 # 如果已是课堂成员且是学生身份and不在指定的分班则移动到该分班
                 if member.present? && member.role == 4 && member.course_group_id != course_group.try(:id).to_i
-                  member.update_column("course_group_id", course_group.try(:id).to_i)
+                  member.update_attributes(course_group_id: course_group.try(:id).to_i)
                   member_count += 1
                 elsif !member.present?
                   member = CourseMember.new(:role => member_role, :user_id => user.id)
@@ -2988,9 +2988,9 @@ end
           @status = 1
           @message = "已导入/更新#{member_count}个成员"
         end
-        rescue
+        rescue Exception => e
           @status = 0
-          @message = "文件内容无法读取"
+          @message = e.message
         end
       else
         @status = 0
@@ -3032,18 +3032,12 @@ end
               # 用户不存在则创建账号
               if !user.present? && school.present?
                 department = school.departments.where(:name => list[2]).first
-                user = User.new
-                user.admin = false
-                user.activate
-                user.login = prefix + list[0].to_s.strip
-                user.lastname = list[1].to_s.strip
-                user.nickname = list[1].to_s.strip
-                user.professional_certification = 1
-                user.certification = 1
-                user.grade = 0
-                user.password = "12345678"
-                user.phone = list[5].blank? ? nil : list[5]
-                if user.save
+                user_params = {status: 1, login: prefix + list[0].to_s.strip, lastname: list[1].to_s.strip,
+                               nickname: list[1].to_s.strip, professional_certification: 1, certification: 1, grade: 0,
+                               password: "12345678", phone: list[5].blank? ? nil : list[5], mail: "#{prefix+list[0].to_s.strip}@qq.com", profile_completed: 1}
+                user = User.create(user_params)
+                user = User.find(prefix + list[0].to_s.strip)
+                if user
                   ue = UserExtensions.new(:user_id => user.id, :gender => 0, :school_id => school_id, :location => school.province, :location_city => school.city, :identity => list[3].to_i, :student_id => list[0].to_s.strip, :department_id => department.try(:id))
                   if list[3] && list[3].to_i == 0
                     ue.technical_title = ["教授", "副教授", "讲师", "助教"].include?(list[4]) ? list[4] : "讲师"
diff --git a/app/models/course_group.rb b/app/models/course_group.rb
index c5b66d87..2986e6ac 100644
--- a/app/models/course_group.rb
+++ b/app/models/course_group.rb
@@ -1,6 +1,6 @@
 class CourseGroup < ActiveRecord::Base
   # attr_accessible :title, :body
-  belongs_to :course
+  belongs_to :course, :counter_cache => true
   has_many :course_members
   has_many :members
   has_many :memberships, :class_name => 'Member'
diff --git a/app/models/user.rb b/app/models/user.rb
index dbb77124..58f293d6 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -300,7 +300,7 @@ class User < Principal
   attr_accessor :password, :password_confirmation
   attr_accessor :last_before_login_on
   # Prevents unauthorized assignments
-  attr_protected :login, :admin, :password, :password_confirmation, :hashed_password
+ # attr_protected :login, :admin, :password, :password_confirmation, :hashed_password
 
   LOGIN_LENGTH_LIMIT = 30
   MAIL_LENGTH_LIMIT = 60
@@ -308,15 +308,15 @@ class User < Principal
   #validates_presence_of :login,  :mail, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }
   validates_presence_of :login, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }
   validates_uniqueness_of :login, :if => Proc.new { |user| user.login_changed? && user.login.present? }, :case_sensitive => false
-  validates_uniqueness_of :mail, :if => Proc.new { |user| user.mail_changed? && user.mail.present? }, :case_sensitive => false
+  #validates_uniqueness_of :mail, :if => Proc.new { |user| user.mail_changed? && user.mail.present? }, :case_sensitive => false
   validates_uniqueness_of :phone, :if => Proc.new { |user| user.phone_changed? && user.phone.present? }, :case_sensitive => false
   # Login must contain letters, numbers, underscores only
   #validates_format_of :login, :with => /\A[a-z0-9_\-]*\z/i
   validates_length_of :login, :maximum => LOGIN_LENGTH_LIMIT
   validates_length_of :firstname, :maximum => 30
   validates_length_of :lastname, :maximum => 30
-  validates_format_of :mail, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i, :allow_blank => true
-  validates_length_of :mail, :maximum => MAIL_LENGTH_LIMIT, :allow_nil => true
+  #validates_format_of :mail, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i, :allow_blank => true
+  #validates_length_of :mail, :maximum => MAIL_LENGTH_LIMIT, :allow_nil => true
   validates_confirmation_of :password, :allow_nil => true
   # validates_inclusion_of :mail_notification, :in => MAIL_NOTIFICATION_OPTIONS.collect(&:first), :allow_blank => true
   validate :validate_password_length
@@ -673,9 +673,9 @@ class User < Principal
     base_reload(*args)
   end
 
-  def mail=(arg)
-    write_attribute(:mail, arg.to_s.strip)
-  end
+  # def mail=(arg)
+  #   write_attribute(:mail, arg.to_s.strip)
+  # end
 
   def identity_url=(url)
     if url.blank?