Traceback (most recent call last):
	  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/base.py", line 824, in runUntilCurrent
	    call.func(*call.args, **call.kw)
	  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/task.py", line 638, in _tick
	    taskObj._oneWorkUnit()
	  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/task.py", line 484, in _oneWorkUnit
	    result = next(self._iterator)
	  File "/usr/local/lib/python2.7/dist-packages/scrapy/utils/defer.py", line 57, in <genexpr>
	    work = (callable(elem, *args, **named) for elem in iterable)
	--- <exception caught here> ---
	  File "/usr/local/lib/python2.7/dist-packages/scrapy/utils/defer.py", line 96, in iter_errback
	    yield next(it)
	  File "/usr/local/lib/python2.7/dist-packages/scrapy/contrib/spidermiddleware/offsite.py", line 26, in process_spider_output
	    for x in result:
	  File "/usr/local/lib/python2.7/dist-packages/scrapy/contrib/spidermiddleware/referer.py", line 22, in <genexpr>
	    return (_set_referer(r) for r in result or ())
	  File "/usr/local/lib/python2.7/dist-packages/scrapy/contrib/spidermiddleware/urllength.py", line 33, in <genexpr>
	    return (r for r in result or () if _filter(r))
	  File "/usr/local/lib/python2.7/dist-packages/scrapy/contrib/spidermiddleware/depth.py", line 50, in <genexpr>
	    return (r for r in result or () if _filter(r))
	  File "/home/dk/PycharmProjects/pyder/cabela/cabela/spiders/cab_spider.py", line 111, in parse_product
	    self.driver.get(response.url)
	  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 187, in get
	    self.execute(Command.GET, {'url': url})
	  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/webdriver.py", line 175, in execute
	    self.error_handler.check_response(response)
	  File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 166, in check_response
	    raise exception_class(message, screen, stacktrace)
	selenium.common.exceptions.NoSuchWindowException: Message: Error Message => 'Currently Window handle/name is invalid (closed?)'
	 caused by Request => {"headers":{"Accept":"application/json","Accept-Encoding":"identity","Connection":"close","Content-Length":"366","Content-Type":"application/json;charset=UTF-8","Host":"127.0.0.1:46249","User-Agent":"Python-urllib/2.7"},"httpVersion":"1.1","method":"POST","post":"{\"url\": \"http://www.cabelas.com/product/Bargain-Cave/Auto-ATV/Auto-Exterior%7C/pc/105591780/c/105776280/sc/105778080/Champion-Winch-Mount/1805630.uts?destination=%2Fcatalog%2Fbrowse%2Fauto-exterior%2F_%2FN-1102819%2FNo-192%2FNs-CATEGORY_SEQ_105778080%3FWTz_st%3DGuidedNav%26WTz_stype%3DGNP%26recordsPerPage%3D48\", \"sessionId\": \"ebb613d0-f327-11e4-b642-4f9369d13d90\"}","url":"/url","urlParsed":{"anchor":"","query":"","file":"url","directory":"/","path":"/url","relative":"/url","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/url","queryKey":{},"chunks":["url"]},"urlOriginal":"/session/ebb613d0-f327-11e4-b642-4f9369d13d90/url"}
	Screenshot: available via screen