how to fix source not found message for coldfusion eclipse remote debugging?

I have eclipse with coldfusion builder installed, and I set up the various screens - RDS and coldfusion debug settings in preferences, project properties and set the server up there.

It seems like it is almost working, the RDS screens work, and I can start debugging, but when it hits my breakpoint I get a blank source page that says 'Source not found.' with a button for 'Edit source lookup path'.

If I click the button, it shows my workspace tree, not much I can do with that, but I can add a path so I tried adding a path to the root of my project on the web server. When I ok that, for an instant I see some co开发者_C百科de appear in the source viewer, then it disappears and I have the source not found message again. If I click edit, my path is not there... ??

I am not sure what fixed it exactly, but I just went through all the different settings screens and re-defined all the debugging paths, etc. and it finally started working.