Hi,
I'm at my wits end 
I have a functional test that invokes the destroy action of one of my controllers, this in turn removes a record from the database. If I run the test like this [ruby test/functionals/admin/ version_controller_test.rb], the test passes... as it should.
However, if I run rake test:functionals from my app dir, I get a SystemStackError
If anyone has a clue as to what might be causing this, please let me know. Below is the stack trace:
Regards, Steven
  1) Error: test_destroy_software_version(Admin::VersionsControllerTest): SystemStackError: stack level too deep     (eval):3:in `destroy_without_habtm_shim_for_operating_systems'     (eval):4:in `destroy_without_habtm_shim_for_operating_systems'     (eval):4:in `destroy_without_callbacks'     /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/callbacks.rb:321:in `destroy_without_transactions'     /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/transactions.rb:125:in `destroy'     /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/connection_adapters/abstract/database_statements.rb: 59:in `transaction'     /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/transactions.rb:95:in `transaction'     /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/transactions.rb:121:in `transaction'     /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.2/lib/ active_record/transactions.rb:125:in `destroy'     /srv/www/rails_apps/software_central/config/../app/controllers/ admin/versions_controller.rb:65:in `destroy'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/base.rb:1095:in `send'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/base.rb:1095:in `perform_action_without_filters'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:632:in `call_filter'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:638:in `call_filter'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:438:in `call'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:637:in `call_filter'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:619:in `perform_action_without_benchmark'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/benchmarking.rb:66:in `perform_action_without_rescue'     /usr/local/lib/ruby/1.8/benchmark.rb:293:in `measure'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/benchmarking.rb:66:in `perform_action_without_rescue'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/rescue.rb:83:in `perform_action'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/base.rb:430:in `send'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/base.rb:430:in `process_without_filters'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:624:in `process_without_session_management_support'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/session_management.rb:114:in `process_without_test'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/test_process.rb:15:in `process'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/test_process.rb:382:in `process'     /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/test_process.rb:353:in `get'     ./test/functional/admin/versions_controller_test.rb:136:in `test_destroy_software_version'
52 tests, 354 assertions, 0 failures, 1 errors rake aborted! Command failed with status (1): [/usr/local/bin/ruby -Ilib:test "/usr/ local...] /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:722:in `sh' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:729:in `call' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:729:in `sh' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:812:in `sh' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:747:in `ruby' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:812:in `ruby' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake/testtask.rb: 117:in `define' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:831:in `verbose' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake/testtask.rb: 102:in `define' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `call' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `each' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:357:in `invoke' /usr/local/lib/ruby/1.8/thread.rb:135:in `synchronize' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `each' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run' /usr/local/lib/ruby/gems/1.8/gems/rake-0.7.1/bin/rake:7 /usr/local/bin/rake:18:in `load' /usr/local/bin/rake:18