[Mediawiki-api] API action=edit problem

[Russell Blau]

I've been testing my client code on test.wikipedia.org and having problems, 
but I can't tell whether it is a problem in my code, in the API, or on the 
testwiki server.

I submitted an edit to a user page using the following body in the POST 
request to http://test.wikipedia.org/w/api.php (I've broken out the body 
into key=value pairs to make it somewhat more readable, but there were no 
line breaks in the body as submitted via http):

maxlag=5&
title=User%3AR%27n%27B%2Ftest&
text=Further+test+of+page+revision+using+API.&
format=json&
recreate=&
basetimestamp=2008-06-04T19%3A40%3A58Z&
summary=test+revision+again&
token=0a2b0e1b8d6cea730e7802b900476fa0%2B%5C&
action=edit&
minor=

This request returned an HTTP 500 status code with an empty response body; 
however, the edit was successful on the wiki server.  (See 
http://test.wikipedia.org/wiki/User:R%27n%27B/Test) Any ideas why I would be 
getting this 500 status code instead of the expected JSON response text?

Russ Blau