[galaxy-dev] Launching External functional tests fails with: local variable 'galaxy_test_proxy_port' referenced before assignment

I'm trying to run functional tests on the stable branch of galaxy using:

GALAXY_TEST_EXTERNAL=1 GALAXY_TEST_HOST=galaxy GALAXY_TEST_PORT=80 ./run_functional_tests.sh

But I'm getting the error:

Traceback (most recent call last): File "./scripts/functional_tests.py", line 457, in <module> sys.exit( main() ) File "./scripts/functional_tests.py", line 362, in main if galaxy_test_proxy_port: UnboundLocalError: local variable 'galaxy_test_proxy_port' referenced before assignment 'run_functional_tests.sh help' for help

Am I doing something wrong? I'm following the instructions at https://wiki.galaxyproject.org/Admin/Running Tests

Renato