Trying to solve a python/mechanize "error 500" http error

[bruce]

i'm getting the following error:
	mechanize._response.httperror_seek_wrapper: HTTP Error 500:

i'm running python 5.1
and mechanize 0.1.7b

I have no idea as to what I have to change/modify/include to handle this
issue. The link that I'm testing is at the bottom of the page. When I insert
the link into the browser, I actually get an err page.. so, I suspect that
there is a handler that I should be able to modify/use to handle this
situation...

Thoughts/Comments will be greatly appreciated...

Thanks


the output is:

www =  www.1800ink.com
url2= http://www.quantcast.com/www.1800ink.com/traffic
Traceback (most recent call last):
  File "./reseller_scrape_child.py", line 288, in <module>
    q1 = shopfuncs.quant(rhref)
  File "/adkiller/shopfuncs.py", line 56, in quant
    br.open(url2)
  File "build/bdist.linux-x86_64/egg/mechanize/_mechanize.py", line 203, in
open
  File "build/bdist.linux-x86_64/egg/mechanize/_mechanize.py", line 254, in
_mech_open
mechanize._response.httperror_seek_wrapper: HTTP Error 500:
[root at toshiba adkiller]# ./reseller_scrape_child.py



my code segment looks like:
====================================
from  mechanize import Browser
import mechanize
	br = Browser()
	user_agent = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)'
	values1 = {'name' : 'Michael Foord',
	          'location' : 'Northampton',
	          'language' : 'Python' }
	headers = { 'User-Agent' : user_agent }

	#br.set_cookiejar(cj)
	br.set_handle_redirect(True)
	br.set_handle_referer(True)
	br.set_handle_robots(False)
	br.addheaders = [('User-Agent', 'Firefox')]

	url2 ="http://www.quantcast.com/xxxx/traffic"
	#gets the page (url) from the quantcast app
	url2=url2.replace("xxxx",url)
	print "url2=",url2
	br.open(url2)

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

this works ok for most of the sites.. but something weird is happening with
the actual page:
	http://www.quantcast.com/www.1800ink.com/traffic


thanks...