Roundup 1.4.9 running at / (web server root) via the following wsgi script:

#!/usr/bin/env python
import sys
sys.stdout = sys.stderr
# obtain the WSGI request dispatcher
from roundup.cgi.wsgi_handler import RequestDispatcher
tracker_home = '/home/roundup/kolab'
application = RequestDispatcher(tracker_home)

An HTTP request triggers a traceback, which in turn gets emailed to the
admin.
The request is:
"OPTIONS / HTTP/1.0"

The traceback is:

Traceback (most recent call last):

  File "/usr/local/lib/python2.5/site-packages/roundup/cgi/client.py",
line 430, in inner_main
    self.determine_charset()

  File "/usr/local/lib/python2.5/site-packages/roundup/cgi/client.py",
line 559, in determine_charset
    if self.form.has_key('@charset'):

  File "/usr/lib/python2.5/cgi.py", line 618, in has_key
    raise TypeError, "not indexable"

TypeError: not indexable

With roundup 1.4.10 the traceback is sent as an HTML mail.
The bad thing is that it is HTML mail, but the good thing is that the
request parameters are included, e.g.:

   REQUEST_METHOD             'OPTIONS'
   REQUEST_URI                '/'

Fixed in Revision 4396
For download of modified wsgi_handler, see
http://svn.roundup-tracker.org/viewvc/roundup/roundup/trunk/roundup/cgi/wsgi_handler.py?view=log

Implementation was lacking a handler for the http OPTIONS request method.