Method <em>HelloWorld.say</em> does not exist.

Hi!
I'm fairly new to AMFPHP and I'm trying to make it work with Flash. However I keep on running into the same problems. Whenever I run the simple "HelloWorld" example from the original website, I get a response from the server saying: "Method HelloWorld.say does not exist.".

I have drupal 6.10, Services, AMFPHP, & XMLRPC Server installed and running.
-Node Service, System Service & Views Service enabled.
-"Use Keys" & "Use Sessid" both disabled.
-Clean URL's enabled

When I open "http://www.website.com/drupal/services/amfphp" I can see the AMFPHP gateway page informing me that AMFPHP is correctly installed.
So I don't know where I'm going wrong. Maybe the gatewayurl which i'm using? I've tried different urls but still varied results. Should I use: "http://www.website.com/drupal/modules/amfphp/amfphp"?

I read all the posts I could find online regarding my issue, but still can't make it work... Any help would be greatly appreciated.
Thanks!
David