FireFox is not loaded if binary-componet/interfaces in chrome.manifest is more than 10

What steps will reproduce the problem?
1.Have a plugin for FF which are using chrome.manifest for Plugin
- Chrome.manifest that support for FF3.6 - FF15.0
- Chrome.manifest that having binary-componet/interfaces which is
more than 10
2.Run simple code as below to open the FF.
======================================================================
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
import win32com.client as comclt
import time
import unittest
import time

class TestNewTab(unittest.TestCase):

driver = webdriver.Firefox()

def test_01_Google(self):
self.driver.get("ANY URL")
print 'Test 01 : Rating Icon in "GOOGLE" Search Engine is shown\n'


## def test_exit(self):
## self.driver.close()

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

=====================================================================

Expected output:
Firefox should open and load with Plugin

Actual output:
Firefox is not loaded if the binary-componet/interfaces in chrome.manifest is at position that more than 10

Selenium version:
OS: Win_7_64bit / Win_Xp_Pro
Browser:FireFox
Browser version:14.0 , 15.0