diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 8e729b083..5aab1df49 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -1704,7 +1704,7 @@ class UsersController < ApplicationController
         sql = "user_id = #{@user.id} and ((container_type = 'Project' and container_id in #{user_project_ids} and act_type in #{project_types}) or (container_type = 'Course' and container_id in #{user_course_ids} and act_type in #{course_types}))"
       end
       if User.current != @user
-        sql += "and user_id = #{@user.id}"
+        sql += " and user_id = #{@user.id}"
       end
     else
       if User.current != @user
diff --git a/app/views/users/_courses_list.html.erb b/app/views/users/_courses_list.html.erb
index ab6c8ff81..d79215f9a 100644
--- a/app/views/users/_courses_list.html.erb
+++ b/app/views/users/_courses_list.html.erb
@@ -10,7 +10,7 @@
             <div class="syllabus_class_w ">
               <a href="<%= allow_visit ? course_path(course.id) : "javascript:void(0)" %>" class="syllabus_class_title fl" target="_blank" title="<%= allow_visit ? "" : "私有班级不可访问" %>"><%= course.name %></a>
               <span class="<%= course.is_public == 0 ? 'syllabus_class_private' : 'syllabus_class_open' %> fl ml10 mt3 syllabus_class_property"><%= course.is_public == 0 ? '私有' : '公开' %></span>
-              <span class="fr sy_p_grey hidden" style="max-width: 120px;">主讲老师：<%= link_to course.teacher.show_name, user_path(course.teacher) %></span>
+              <span class="fr sy_p_grey hidden" style="max-width: 120px;">创建老师：<%= link_to course.teacher.show_name, user_path(course.teacher) %></span>
 
               <div class="cl"></div>
             </div>
diff --git a/app/views/users/_project_issue.html.erb b/app/views/users/_project_issue.html.erb
index 7b3509f2c..131354df0 100644
--- a/app/views/users/_project_issue.html.erb
+++ b/app/views/users/_project_issue.html.erb
@@ -80,7 +80,7 @@
       <div id="intro_content_hide_<%= user_activity_id %>" class="fr" style="display:none;"><a href="javascript:void(0);" class="linkBlue">[收起]</a></div>
       <div class="cl"></div>
       <%# 局部刷新：修改xissue属性 %>
-      <% if User.current.member_of?(activity.project) %>
+      <% if User.current.member_of?(activity.project) && !activity.nil? && !activity.status.nil? %>
           <% unless params[:action] == "index" %>
               <div id="div_user_issue_detail_<%=activity.id %>">
                 <%= render :partial => 'users/project_issue_detail', :locals => {:activity => activity} %>
diff --git a/app/views/users/_user_course_list.html.erb b/app/views/users/_user_course_list.html.erb
index 9013c41f4..f757b170b 100644
--- a/app/views/users/_user_course_list.html.erb
+++ b/app/views/users/_user_course_list.html.erb
@@ -23,7 +23,7 @@
                             :style => 'color:#000',:id => "show_course_#{course.id}", :target => '_blank', :title => (course.is_public? ? "公开班级：":"私有班级：")+course.name+"（"+current_time_and_term(course)+"）"%>
                 <% teacher = User.where("id=?",course.tea_id).first%>
                 <span class="fr grayTxt">
-                    <%='主讲老师：'+(teacher.try(:realname) != " " ? teacher.lastname + teacher.firstname : teacher.try(:login)) %>
+                    <%='创建老师：'+(teacher.try(:realname) != " " ? teacher.lastname + teacher.firstname : teacher.try(:login)) %>
                   </span>
               </li>
               <div class="cl"></div>