[CalendarServer-users] "Wrong number of arguments"

I've tried to install DCS system-wide with './run -i /' . Running /usr/local/bin/caldavd produces $ /usr/local/bin/caldavd Usage: twistd [options] Options: . . . /usr/local/bin/twistd: Wrong number of arguments. $ The same goes for various permutations of options, e.g. "-X -f /path/to/caldavd.plist" All this is on a non-server installation of Mac OS 10.5.1. Any advice gratefully received. Robert