after getting the above message when trying to debug a form I followed the debugger installation steps.

I ran phpInfo() and my extension_dir was c:/sokkit/php5/extensions.

I copied php_dbg.dll-5.2.x from c:/programs/phpEd5/debugger/server into c:/sokkit/php5/extensions.

I changed php.ini so it included the debugger:
extensions=php_dbg.dll.5.2.x

I restarted Apache and received the following error:
PHP startup: Unable to load dynamic library c:/sokkit/php5/extensions/php_dbg.dll-5.2.x. The specified procedure could not be found.

At first I thought I made a typo...but the php_dbg.dll-5.2.x is in the directory c:/sokkit/php5/extensions.

Help.

You are using PHP 5.2, aren't you? If you are using any other version of PHP, you should load the DBG module that corresponds to the version of PHP.

Oh no, I was using Php Version 5.0.3.
Now I have another problem.
I a)copied php_dbg.dll-5.0.x to c:/sokkit/php5/extensions
b)deleted php_dbg.dll-5.2.x
c) changed the php.ini so the it reads php_dbg.dll-5.0.x instead of php_dbg.dll-5.2.x
d) stopped the web server
e) restarted the web server and got the following error:

Fatal Error. The installed PHP module 'dbg' (debugging software) is incompatible with the ionCubeloader. Disable 'dbg' by putting a ';' before it's extension entry in the php.ini file and restarting the web server software.

I checked the version of the ionCubeloader and it is 'ionCube_loader_win_5.0.dll.

Help.

I had a similar problem when using both the ionCube Loader and the DBG module. I found the sequence of loading the modules in php.ini can make or brake things:
1) If you use ionCube, load it first
2) Next load DBG
3) Finally, if you use the Zend Optimizer module, load it last

Thanks so much. I actually don't use the zend extensions so I just commented them out. Now everything works perfectly.