Redmine

Hi,
Please help me with installing redmine 1.2.0 on Redhat Linux

I always face this error when migrating the database

% env | grep RAILS_ENV
RAILS_ENV=production
% rake db:migrate
(in /path/to/redmine-1.2.0)
rake aborted!
Object is not missing constant Issue!

If a --trace is needed please see the log file attached.

My Linux

% uname -a
% Linux <my_machine> 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64 x86_64 x86_64 GNU/Linux

with ruby 1.8.7

% ruby --version
ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]

RubyGem 1.6.2

% gem --version
1.6.2

local gems

% gem list --local

*** LOCAL GEMS ***

actionmailer (2.3.11)
actionpack (2.3.11)
activerecord (2.3.11)
activeresource (2.3.11)
activesupport (2.3.11)
i18n (0.4.2)
mysql (2.8.1)
rack (1.1.1)
rails (2.3.11)
rake (0.8.7)

I've searched around and think it might be because of the improper installation with mysql gem.
I've tried everything to install mysql gem (setenv ARCHFLAGS "-arch x86_64"; mysql 5.0, 5.1 and 5.5 !) but still faced that issue above.

Could you please help?
Thanks,
NCH