Redmine

I have used Redmine 1.2.0 for a couple of months (from Bitnami-Redmine 1.2.0 for Win) without any big issues.

I tried to upgrade it to 1.2.1 and I have strictly followed the upgrade instructions
( RedmineUpgrade and http://bitnami.org/article/how-to-backup-and-update-the-bitnami-redmine-stack ).
However, I could't make it successful. I don't know why.

Although all the services for Redmine seem to be properly started when looking at the Windows Services, a Proxy error message, "The proxy server received an invalid response from an upstream server. The proxy server could not handle the request GET /redmine. Reason: Error reading from remote server", is all I can see.

The only clue, Mongrel's log, says:

** Starting Mongrel listening at 0.0.0.0:3002
** Starting Rails with production environment...
** Mounting Rails at /redmine...
D:/DevEnv/Bitnami Redmine/apps/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:466:in `load_missing_constant': uninitialized constant ActionController::AbstractRequest (NameError)
    from D:/DevEnv/Bitnami Redmine/apps/redmine/vendor/rails/activesupport/lib/active_support/dependencies.rb:106:in `const_missing'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/../lib/mongrel/rails.rb:151:in `rails'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/mongrel_rails:113:in `cloaker_'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/../lib/mongrel/configurator.rb:149:in `call'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/../lib/mongrel/configurator.rb:149:in `listener'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/mongrel_rails:99:in `cloaker_'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/../lib/mongrel/configurator.rb:50:in `call'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/../lib/mongrel/configurator.rb:50:in `initialize'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/mongrel_rails:84:in `new'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/mongrel_rails:84:in `run'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/../lib/mongrel/command.rb:212:in `run'
    from D:/DevEnv/Bitnami Redmine/ruby/lib/ruby/gems/1.8/gems/mongrel-1.1.5-x86-mingw32/bin/mongrel_rails:281
    from D:/DevEnv/Bitnami Redmine/ruby/bin/mongrel_rails:19:in `load'
    from D:/DevEnv/Bitnami Redmine/ruby/bin/mongrel_rails:19

The BitNami Redmine Stack I used ships with the following software versions:
- Redmine 1.2.0
- Apache 2.2.17
- ImageMagick 6.5.6-8-Q8
- MySQL 5.0.83
- Subversion 1.6.15
- Ruby 1.8.7-p334-i386-mingw32
- Rails 2.3.11
- RubyGems 1.6.2

I have checked it on the requirements (i.e., RedmineInstall ) and found out there are no conflict.

At last, I got an answer from Etienne Massip (http://www.redmine.org/users/6508) as follows:
"Maybe you should try to remove rails from your Redmine vendor directory as you installed it as a gem."
but, it didn't work too.

Please somebody help me out :-(