Topic: cannot run "test" rake task

I am working on a rails program and I have been trying to get the test cases to work properly.  Everything was going well until no when rake will not even run the test cases.  When I run rake test --trace I get this output:

C:\Documents and Settings\joshua.moore\development\performanceTest>rake test --t
race
(in C:/Documents and Settings/joshua.moore/development/performanceTest)
** Invoke test (first_time)
** Execute test
** Invoke test:units (first_time)
** Invoke db:test:prepare (first_time)
** Invoke environment (first_time)
** Execute environment
** Invoke db:abort_if_pending_migrations (first_time)
** Invoke environment
** Execute db:abort_if_pending_migrations
** Execute db:test:prepare
** Invoke db:test:clone (first_time)
** Invoke db:schema:dump (first_time)
** Invoke environment
** Execute db:schema:dump
** Invoke db:test:purge (first_time)
** Invoke environment
** Execute db:test:purge
** Invoke test:functionals (first_time)
** Invoke db:test:prepare
** Execute test:functionals
c:/ruby/bin/ruby -Ilib;test "c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake/
rake_test_loader.rb"
** Invoke test:integration (first_time)
** Invoke db:test:prepare
** Execute test:integration
c:/ruby/bin/ruby -Ilib;test "c:/ruby/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake/
rake_test_loader.rb"
Errors running test:units!

does anybody have any idea of what I can do to fix this?

thanks,

Josh