I'm trying to run a blank default performance test with Ruby 1.9 and Rails 2.3.5 and I just can't get it to work! What am I missing here???

rails testapp
cd testapp
script/generate scaffold User name:string
rake db:migrate
rake test:benchmark

-

/usr/local/bin/ruby19 -I"lib:test" "/usr/local/lib/ruby19/gems/1.9.1/gems/rake-0.8.7/lib/rake/rake_test_loader.rb" "test/performance/browsing_test.rb" -- --benchmark
Loaded suite /usr/local/lib/ruby19/gems/1.9.1/gems/rake-0.8.7/lib/rake/rake_test_loader
Started
/usr/local/lib/ruby19/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:105:in `rescue in const_missing': uninitialized constant BrowsingTest::STARTED (NameError)
    from /usr/local/lib/ruby19/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:94:in `const_missing'
    from /usr/local/lib/ruby19/gems/1.9.1/gems/activesupport-2.3.5/lib/active_support/testing/performance.rb:38:in `run'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:415:in `block (2 levels) in run_test_suites'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:409:in `each'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:409:in `block in run_test_suites'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:408:in `each'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:408:in `run_test_suites'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:388:in `run'
    from /usr/local/lib/ruby19/1.9.1/minitest/unit.rb:329:in `block in autorun'
rake aborted!
Command failed with status (1): [/usr/local/bin/ruby19 -I"lib:test" "/usr/l...]