Integration test won't run

Im trying to write and run integration tests in my app, but they keep
failing with an error like “uninitialized constant IntegrationTest”
secificly:

/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.3.1/lib/
active_support/dependencies.rb:123:in `const_missing’: uninitialized
constant IntegrationTest (NameError)

I tried creating a fresh rails app and was able to run an integration
test from there. I also tried updating to edge with rake rails:edge.
In case the problem was computer specific i tried on my server (as
opposed to my macbook)
there i get:

rake test:integration
(in /home/httpd/anacapamarine.com/htdocs/oncourse_development)
/usr/bin/ruby18 -Ilib:test “/usr/lib64/ruby/gems/1.8/gems/rake-0.7.1/
lib/rake/rake_test_loader.rb” “test/integration/request_part_test.rb”
/usr/lib64/ruby/site_ruby/1.8/rubygems/custom_require.rb:99: [BUG]
Segmentation fault
ruby 1.8.4 (2006-02-24) [x86_64-linux]

Im totally stumped and would appreciate any help or suggstions.

Thanks,

Michael Fairchild

UCLA Particle Beam Physics Lab