In reading my own last note, I see that my original problem was likely because of some error in my caldavd-dev.plist file. Perhaps there's been a change in the structure of that, or I somehow managed to create an error of some sort by adding an invalid line. Either way, I can go back and fix that using the sample caldavd-test.plist as my model, if need be. The larger question for me now is how I get around the python dateutil build error. I have sought to resolve this in a number of ways, including setting up a whole new installations of CalendarServer in their own directories - both from trunk and the latest stable release, CalendarServer-2.4. In each case, when I get to this part of the run script, it fails. Is there another way to build DCS's dateutil so that it's already present and the run script can skip it? Or any other suggestions? I am running on mac os x 10.6.4 Thanks all! Conrad