setUpClass does not run with HTMLTestrunner

Attempted to run a test scenario/Testcase using the setUpClass(cls) and tearDownClass python unittest methods.

Note: The same script works using setUp(self) and tearDown(self) method. However the setup/teardown is called at every test_ def.

When running with the setUpClass(cls) and tearDownClass the following error is produced, from what I believe is an error in the HTMLTestrunner.

"[error] AttributeError ( '_TestResult' object has no attribute 'outputBuffer' )
[error] --- Traceback --- error source first
line: module ( function ) statement
594: HTMLTestRunner ( complete_output ) AttributeError: '_TestResult' object h
s no attribute 'outputBuffer'
198: suite ( _addClassOrModuleLevelException ) File "C:\Sikuli\sikulix.jar\L
b\HTMLTestRunner.py", line 620, in addError
100: suite ( run ) File "C:\Sikuli\sikulix.jar\Lib\unittest\suite.py", line
53, in _handleClassSetUp
678: HTMLTestRunner ( run ) File "C:\Sikuli\sikulix.jar\Lib\unittest\suite.p
", line 70, in __call__
[error] --- Traceback --- end --------------
"

Stuck at how to get the outputbuffer attribute triggered. I think I need to edit the complete_output and the addError def in the HTMLTestrunner however I am not sure what to edit.

Here is an example of the script I am attempting to run.

from sikuli import *
import os
import sys
import HTMLTestRunner
import time
import unittest
#import utils
import org.sikuli.basics.SikulixForJython

dir = "C:\Sikuli\Test\Test"
if not dir in sys.path: sys.path.append(dir)
fp = file(os.path.join(dir, "SetupClass_TestReport.html"), "wb")

class TestcaseSetupScenario(unittest.TestCase):

    @classmethod
    def setUpClass(cls):#(self):
        App.open(r'C:\Program Files (x86)\Mozilla Firefox\firefox.exe')
        wait(2)
        type(Key.F6)
        wait(1)
        paste(www.google.com)

        Debug.info("setUpClass called")

    #def setUp(self):
        #print "testing 123"

    @classmethod
    def tearDownClass(cls):#(self):
        App.close('Mozilla Firefox')
        Debug.info("tearDownClass called")

    #def tearDown(self):
        #print "321 testing"

    def test_step_01(self):
        Debug.info("executing test step 1")
        wait(7)
        assert exists("google_search.png")

    def test_step_02(self):
        Debug.info("executing test step 2")
        type(Key.F6)
        paste(www.sikulix.com)
        type(Key.ENTER)
        wait(3)
        assert exists("SikuliX.png")

    def test_step_03_(self):
        Debug.info("executing test step 3")
        assert exists("Sikuli.png")

suite = unittest.TestLoader().loadTestsFromTestCase(TestcaseSetupScenario)
runner = HTMLTestRunner.HTMLTestRunner(stream = fp, verbosity=1, dirTestScreenshots = dir)
runner.run(suite)