Redmine

I did an SVN update as i understood here
http://forum.redminebacklogs.net/ArgumentError-pdf-Unit-not-recognized-td3114666.html

getting to

Redmine 1.2.1.stable.6273 (MySQL)

Im also trying a Mylyn integration wich happends to fail because of the same error

ArgumentError ('.xml' Unit not recognized):
/var/lib/gems/1.8/gems/ruby-units-1.3.1/lib/ruby_units/unit.rb:1228:in `parse'
/var/lib/gems/1.8/gems/ruby-units-1.3.1/lib/ruby_units/unit.rb:243:in `initialize'
/var/lib/gems/1.8/gems/ruby-units-1.3.1/lib/ruby_units/string.rb:5:in `new'
/var/lib/gems/1.8/gems/ruby-units-1.3.1/lib/ruby_units/string.rb:5:in `unit'
/var/lib/gems/1.8/gems/ruby-units-1.3.1/lib/ruby_units/string.rb:34:in `from'
generated code (actionpack (2.3.11) lib/action_controller/routing/route.rb:205):14:in `recognize'
(recognize_optimized):8:in `recognize_optimized'
/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 /usr/share/redmine-1.2/public/500.html (500 Internal Server Error)

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