Rails - Apr 2006 - rails Test problem

Hi-

  I''m trying to install the latest version (1.1) of Ruby on Rails on an
Ubuntu
5.10 (Breezy Badger) system.  I compiled ruby, installed gems, and gem 
installed rails, no problem.

  However, when I try and set up a test app a get the following error:

~> rails Test
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.0/lib/active_support/dependencies.rb:84:in
`const_missing'': undefined method `demodulize'' for
"ActiveRecordError":String
(NoMethodError)
        
from
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record/validations.rb:9
        
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in 
`require''
        
from
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.0/lib/active_support/dependencies.rb:136:in
`require''
        
from
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.14.0/lib/active_record.rb:39
        
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:21:in 
`require''
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:182:in
`activate''
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:181:in
`activate''
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:167:in
`activate''
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:166:in
`activate''
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:37:in 
`require_gem_with_options''
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:31:in
`require_gem''
        from /usr/local/bin/rails:17

  Any ideas?

Thanks,
Kevin