[BioRuby] biographics/pango problem?

[George Githinji]

Hey,
I recently migrated my application from windows(where it was running okl) to
a linux box (because it is open source and has better  support)
I am running Ubuntu 8.04 (hardy) with rails 1.2.1, ruby 1.8.6, bioruby 1.2.1
and biographics 1.4
I have also installed libcairo per the instructions on the bio-graphics
library webpage.
however i think i am having problems with pango.

Is there a pango alternative? Anyway that i can resolve the error below?

=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
=> Rails 2.1.0 application starting on http://0.0.0.0:3013
=> Call with -d to detach
=> Ctrl-C to shutdown server
** Starting Mongrel listening at 0.0.0.0:3013
** Starting Rails with development environment...
/usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require': no such file to load -- pango (MissingSourceFile)
Exiting
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in
`require'
        from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:354:in
`new_constants_in'
        from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in
`require'
        from
/usr/lib/ruby/gems/1.8/gems/bio-graphics-1.4/lib/bio-graphics.rb:12
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:32:in
`gem_original_require'
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:32:in
`require'
        from
/usr/lib/ruby/gems/1.8/gems/activesupport-2.1.0/lib/active_support/dependencies.rb:509:in
`require'
         ... 29 levels...
        from
/usr/lib/ruby/gems/1.8/gems/rails-2.1.0/lib/commands/server.rb:39
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
        from script/server:3

-- 
---------------
Sincerely
George

Research Assistant
KEMRI-Wellcome Trust Program
Kilifi, Kenya

Skype: george_g2
Website: http://biorelated.wordpress.com/