Redmine

Hi!
I'm beginner in Redmine. There was a need to establish Kanban plugin. After installation, I can go to the settings plugin can also go to the menu item 'Kanban'. But here is to get to the menu 'Kanban overview' or 'My Requests' I can not. Get the message:

Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your redMine administrator for assistance.

Back

Software version:

Redmine 1.0.0.stable (MySQL)
Kanban 0.2.0

Ruby 1.8.7

aasm (3.0.9)
actionmailer (2.3.11, 2.3.5, 2.1.2)
actionpack (2.3.11, 2.3.5, 2.1.2)
activerecord (2.3.11, 2.3.5, 2.1.2)
activeresource (2.3.11, 2.3.5, 2.1.2)
activesupport (2.3.11, 2.3.5, 2.1.2)
block_helpers (0.3.3)
camping (2.1)
cgi_multipart_eof_fix (2.5.0)
daemon_controller (0.2.6)
daemons (1.1.0)
eventmachine (0.12.10)
fastthread (1.0.7)
fcgi (0.8.8)
file-tail (1.0.5)
gdata (1.1.1)
gem_plugin (0.2.3)
git (1.2.5)
googlecharts (1.6.1)
i18n (0.4.2)
memcache-client (1.8.5)
mongrel (1.1.5)
multi_json (1.3.6)
passenger (3.0.5)
rack (1.2.2, 1.1.3, 1.0.1)
rails (2.3.11, 2.3.5, 2.1.2)
rake (0.8.7)
ruby-openid (2.0.1)
spruz (0.2.5)
test-spec (0.10.0)
thin (1.2.8)

Log file (production.log) the following error:

/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start'

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

Processing KanbanOverviewsController#show (for 111.111.111.111 at 2012-10-16 11:39:53) [GET]
Parameters: {"action"=>"show", "controller"=>"kanban_overviews"}

NoMethodError (undefined method `project_tree' for #<Class:0xb6ef075c>):
vendor/plugins/redmine_kanban/app/controllers/kanban_overviews_controller.rb:13:in `show'
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start'

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

Processing UserKanbansController#show (for 111.111.111.111 at 2012-10-16 11:39:57) [GET]
Parameters: {"action"=>"show", "id"=>"4", "controller"=>"user_kanbans"}

NoMethodError (undefined method `project_tree' for #<Class:0xb6ef075c>):
vendor/plugins/redmine_kanban/app/controllers/user_kanbans_controller.rb:21:in `show'
/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in `service'
/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in `run'
/usr/lib/ruby/1.8/webrick/server.rb:173:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:162:in `start_thread'
/usr/lib/ruby/1.8/webrick/server.rb:95:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `each'
/usr/lib/ruby/1.8/webrick/server.rb:92:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:23:in `start'
/usr/lib/ruby/1.8/webrick/server.rb:82:in `start'

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

Please tell me what to do in order to run this plugin. Can postvit version 0.1.1. Version 0.2.0 may be incompatible with some packages that I have installed?
I apologize in advance for my English.