Error while running selenium ide exported script in python on FF browser

Im new to selenium & python. I have installed python 3.4.1 & selenium webdriver. Created script using selenium ide and exported to python webdriver. Firefox version - 31.0 System configuration : Window - 32 bit

Script : from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.common.keys import Keys from selenium.webdriver.support.ui import Select from selenium.common.exceptions import NoSuchElementException import unittest, time, re

class Test(unittest.TestCase):
def setUp(self):
    self.driver = webdriver.Firefox()
    self.driver.implicitly_wait(30)
    self.base_url = "https://www.gmail.com/"
    self.verificationErrors = []
    self.accept_next_alert = True

def test_(self):
    driver = self.driver
    driver.get(self.base_url)
    driver.find_element_by_id("Email").clear()
    driver.find_element_by_id("Email").send_keys("shivart")
    driver.find_element_by_id("Passwd").clear()
    driver.find_element_by_id("Passwd").send_keys("test12")
    driver.find_element_by_id("signIn").click()
    driver.find_element_by_css_selector("span.gb_2").click()
    driver.find_element_by_id("gb_71").click()

def is_element_present(self, how, what):
    try: self.driver.find_element(by=how, value=what)
    except NoSuchElementException as e: return False
    return True

def is_alert_present(self):
    try: self.driver.switch_to_alert()
    except NoAlertPresentException as e: return False
    return True

def close_alert_and_get_its_text(self):
    try:
        alert = self.driver.switch_to_alert()
        alert_text = alert.text
        if self.accept_next_alert:
            alert.accept()
        else:
            alert.dismiss()
        return alert_text
    finally: self.accept_next_alert = True

#def tearDown(self):
#    self.driver.quit()
 #   self.assertEqual([], self.verificationErrors)

if __name__ == "__main__":
unittest.main()

when running the script i get below error.

Traceback (most recent call last): File "C:\test.py", line 20, in test_ driver.find_element_by_id("Email").send_keys("shivart.rt") File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py", line 293, in send_keys self._execute(Command.SEND_KEYS_TO_ELEMENT, {'value': typing})

 File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py",
  line 370, in _execute
return self._parent.execute(command, params)

File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", l ine 173, in execute self.error_handler.check_response(response)

File "C:\Python34\lib\site-packages\selenium\webdriver\remote\errorhandler.py"
, line 164, in check_response
 raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: 'Component returned fail ure code: 0x80004003 (NS_ERROR_INVALID_POINTER) [nsINativeKeyboard.sendKeys]'