I am having problems at debugging

I use denver as virtual server

My environment is that my browser is IE 7 running under Windows XP

I have followed all of the instructions as far as I can:

Here is the output of dbg-wizard.php

PHP Version: 5.2.4
Web Server: Apache/2.2.4 (Win32) mod_ssl/2.2.4 OpenSSL/0.9.8d PHP/5.2.4
Server Name: biplan
Platform: WINNT/x86
Your Client IP Address: 127.0.0.1
Your Server IP Address: 127.0.0.1
Port: 80
Your Web Server is on the same machine with PhpED
Path to website files: Z:\home\biplan\www\
Document Root is: Z:\home\biplan\www\
Your PHP.INI file is: Z:\usr\local\php5\php.ini
PHP extensions directory is: \usr\local\php5\ext
DBG (PHP DEBUGGER) Version 3.1.11 is INSTALLED
Installed DBG module is of an older version than currently available from NuSphere

I have added the following text to php.ini on the webserver -
extension=php_dbg.dll-5.2.x


[debugger]
debugger.enabled=On
debugger.profiler_enabled=On

debugger.hosts_allow=127.0.0.1
debugger.hosts_deny=ALL
debugger.ports=7869, 10000/16


I brought up a php page in IE that simply contained

<?php
phpinfo();
?>

and then called address http://biplan/delme.php?DBGSESSID=1&PHPEdHidden=72796 on the phpED IE adress bar - and get the following error:

DBG 3.1.11

Failed to run DBG session


Reason: protocol error ()
Not sure what it means? Visit http://www.nusphere.com/dbg/ for troubleshooting.


Debugger request: "1&PHPEdHidden=72796"
Request found in: "query_string"
Target PHP version: "5.2.0"
Server API: "Apache 2.0 Handler"
Extensions API: "220060519"
Modules API: "20060613"
PHP API: "20041225"

Any ideas what I'm doing wrong ?

You said nothing about version of IDE.
Probably you took debugger module from an old version of the IDE.
Check the version of the debugger that was shipped with IDE.