Really strange. Your config looks fine (although I speak from only having run lighty+fcgi a few times, I've switched to mongrel+pen+lighty since).
A few more things to check: - Make sure that the RJS action is even being hit by looking in the development.log (you've told it to go into development mode on purpose, right?). Also check this log to see if any exceptions are being thrown. - Open up the rendered page and double check the javascript to make sure the action is being referenced properly. - Try hitting the RJS action directly with your browser to see what you get back (provided you've not hidden it behind a request.xhr? check)
Anyone else? Am I missing anything?
