When running Coldfusion on OSX with RDS enabled you may receive a 404 error when trying to connect your IDE (CF Builder, Homesite, etc.)
After reviewing permissions and configuration I found that the issue was Apache checking for the existence of the page prior to attempting to run it. The RDS IDE functions/page does not exist because it simply a URL pattern defined in the web.xml file.
An easy fix was to setup a dummy folder/file:
The IDE.CFM page can be blank, Apache just needs to verify the file exists prior to handing it to the Java server for processing.
An information technology professional with twenty one year's experience in systems administration, computer programming, requirements gathering, customer service, and technical support.