python+selenium+firefox ActionChains鼠标事件报错

Question

一直在python（IDLE）中输入这些命令：

from selenium import webdriver
b=webdriver.Firefox()
from selenium.webdriver.common.action_chains import ActionChains
b.get('http://www.sina.com')
ele=b.find_element_by_link_text('微博')
ActionChains(b).move_to_element(ele).perform()

到这一步报错如下：
Traceback (most recent call last):
File "", line 1, in
ActionChains(b).move_to_element(ele).perform()
File "D:\Program Files\python3.6\lib\site-packages\selenium\webdriver\common\action_chains.py", line 77, in perform
self.w3c_actions.perform()
File "D:\Program Files\python3.6\lib\site-packages\selenium\webdriver\common\actions\action_builder.py", line 76, in perform
self.driver.execute(Command.W3C_ACTIONS, enc)
File "D:\Program Files\python3.6\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in execute
self.error_handler.check_response(response)
File "D:\Program Files\python3.6\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: POST /session/ab75399e-c8e6-40bd-92fe-9c14af6a600c/actions did not match a known command

求大神看看什么原因，跪谢！！！

Answer 1

解决方法：尝试将get代码修改为b.get("http://www.sina.com.cn/")。#使用python3.4测试没有报错，代码片段如下：
#!python34
#-*- coding:utf-8 -*-
from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains

b = webdriver.Chrome(executable_path=your_chromedriver_path)
b.get('http://www.sina.com.cn/')
ele = b.find_element_by_link_text('微博')
ActionChains(b).move_to_element(ele).perform()