Redmine

I upgraded redmine from 1.1.2 to 1.3.2

After it i cant view all issues which have relation with other issues (as child or parent).

It is my log

ActionView::TemplateError (PGError: ERROR:  column reference "lft" is ambiguous
LINE 1: ...rgt" <= 14) AND ("issues"."root_id" = 306)))  ORDER BY "lft" 
                                                                  ^
: SELECT "issues"."id" AS t0_r0, "issues"."tracker_id" AS t0_r1, "issues"."project_id" AS t0_r2, "issues"."subject" AS t0_r3, "issues"."description" AS t0_r4, "issues"."due_date" AS t0_r5, "issues"."category_id" AS t0_r6, "issues"."status_id" AS t0_r7, "issues"."assigned_to_id" AS t0_r8, "issues"."priority_id" AS t0_r9, "issues"."fixed_version_id" AS t0_r10, "issues"."author_id" AS t0_r11, "issues"."lock_version" AS t0_r12, "issues"."created_on" AS t0_r13, "issues"."updated_on" AS t0_r14, "issues"."start_date" AS t0_r15, "issues"."done_ratio" AS t0_r16, "issues"."estimated_hours" AS t0_r17, "issues"."parent_id" AS t0_r18, "issues"."root_id" AS t0_r19, "issues"."lft" AS t0_r20, "issues"."rgt" AS t0_r21, "issues"."is_private" AS t0_r22, "projects"."id" AS t1_r0, "projects"."name" AS t1_r1, "projects"."description" AS t1_r2, "projects"."homepage" AS t1_r3, "projects"."is_public" AS t1_r4, "projects"."parent_id" AS t1_r5, "projects"."created_on" AS t1_r6, "projects"."updated_on" AS t1_r7, "projects"."identifier" AS t1_r8, "projects"."status" AS t1_r9, "projects"."lft" AS t1_r10, "projects"."rgt" AS t1_r11 FROM "issues"  LEFT OUTER JOIN "projects" ON "projects".id = "issues".project_id WHERE (((projects.status=1 AND projects.id IN (SELECT em.project_id FROM enabled_modules em WHERE em.name='issue_tracking')) AND (issues.id != 306)) AND ((issues."lft" >= 1 AND issues."rgt" <= 14) AND ("issues"."root_id" = 306)))  ORDER BY "lft") on line #72 of app/views/issues/show.html.erb:
69:   <%= link_to(l(:button_add), {:controller => 'issues', :action => 'new', :project_id => @project, :issue => {:parent_issue_id => @issue}}) if User.current.allowed_to?(:manage_subtasks, @project) %>
70: </div>
71: <p><strong><%=l(:label_subtask_plural)%></strong></p>
72: <%= render_descendants_tree(@issue) unless @issue.leaf? %>
73: </div>
74: <% end %>
75: 

    app/helpers/issues_helper.rb:83:in `render_descendants_tree'
    app/views/issues/show.html.erb:72
    app/controllers/issues_controller.rb:127:in `show'
    app/controllers/issues_controller.rb:126:in `show'
    /usr/lib/ruby/1.8/mongrel/rails.rb:76:in `process'
    /usr/lib/ruby/1.8/mongrel/rails.rb:74:in `synchronize'
    /usr/lib/ruby/1.8/mongrel/rails.rb:74:in `process'
    /usr/lib/ruby/1.8/mongrel.rb:159:in `process_client'
    /usr/lib/ruby/1.8/mongrel.rb:158:in `each'
    /usr/lib/ruby/1.8/mongrel.rb:158:in `process_client'
    /usr/lib/ruby/1.8/mongrel.rb:285:in `run'
    /usr/lib/ruby/1.8/mongrel.rb:285:in `initialize'
    /usr/lib/ruby/1.8/mongrel.rb:285:in `new'
    /usr/lib/ruby/1.8/mongrel.rb:285:in `run'
    /usr/lib/ruby/1.8/mongrel.rb:268:in `initialize'
    /usr/lib/ruby/1.8/mongrel.rb:268:in `new'
    /usr/lib/ruby/1.8/mongrel.rb:268:in `run'
    /usr/lib/ruby/1.8/mongrel/configurator.rb:282:in `run'
    /usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `each'
    /usr/lib/ruby/1.8/mongrel/configurator.rb:281:in `run'
    /usr/lib/ruby/1.8/mongrel/command.rb:212:in `run'

Rendering /var/lib/redmine/public/500.html (500 Internal Server Error)

i am googled this problem but not found answer :(