Calling CFC's from with cfc's

<cfcomponent name="section" extends="SiteWide" >

phlebas, I think you're running into an issue here. On your CFM page, you're invoking the CFCs and thinking the two CFCs can communicate with each other. It doesn't work like that unless you either put them into appropriate application/session scope or you invoke the cfc within the cfc.

For example:
session.site = createObject('component','...');
registration = createObject('component','...');

Then, inside registration's cfc, you'd have:
<cfscript>
session.site.sendemail("address")
<cfscript>

Otherwise, you'd have to do this:
<cfcomponent>
<!--- constructor zone --->
<cfset siteObject = createObject('component','...')>
<!--- constructor zone --->
<cffunction name="register">
<cfset siteObject.sendemail("address")>
</cffunction>
</cfcomponent>

Note that siteObject is created between the component tags, but is not created in any of the cffunction tag. That means that siteObject is now available to all functions within that component. Otherwise, if you want it available to just one function, then move the siteObject creation inside that one function.

Hope this helps.

> I have 2 CFC's one with site wide functions and one with section functions, I
> want to reference the site cfc from with the section cfc.
>
> How do I reference the site cfc from within the section cfc.

The same way you reference a CFC in a CFM template.

--
Adam