I also followed the instructions at http://manas.tungare.name and was able to setup and successfully connect via webdav to my localhost via both the Finder's "Connect to Server..." and the Goliath WebDav client. In both cases I was able to upload and delete files.

But when I try to sync via webdav to localhost, OmniFocus returns the error 'The server returned an error 502, “bad gateway”.' The sync preferences report a failed sync, though despite this error, OmniFocus is actually writing "OmniFocus.ofocus-copy-in-progress-xxxxxxxxxxx" files to the webdav.

Any thoughts?

I'm running 1.1 sneakypeek v77.4.0.102736 on OS X 10.4.11.