[hwatkins]

I'm having the same error, I thought it was because the self signed certificate was expired, but I updated it and I'm still getting errors.

Here's the logs from successfull desktop sync
[25/Jul/2008:15:21:02 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:02 +0000] "PROPFIND /webdav/OmniFocus.ofocus/ HTTP/1.1" 207 456
[25/Jul/2008:15:21:02 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:03 +0000] "PROPFIND /webdav/OmniFocus.ofocus/ HTTP/1.1" 207 4591
[25/Jul/2008:15:21:03 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:03 +0000] "PROPFIND /webdav/OmniFocus.ofocus/ HTTP/1.1" 207 4591
[25/Jul/2008:15:21:04 +0000] "GET /webdav/OmniFocus.ofocus/20080725152101=iDNJbVGY25S.client HTTP/1.1" 200 998
[25/Jul/2008:15:21:04 +0000] "GET /webdav/OmniFocus.ofocus/20080725151539=iDNJbVGY25S.client HTTP/1.1" 200 998
[25/Jul/2008:15:21:04 +0000] "GET /webdav/OmniFocus.ofocus/20080725151419=iDNJbVGY25S.client HTTP/1.1" 200 998
[25/Jul/2008:15:21:04 +0000] "GET /webdav/OmniFocus.ofocus/20080725144014=iDNJbVGY25S.client HTTP/1.1" 200 998
[25/Jul/2008:15:21:04 +0000] "GET /webdav/OmniFocus.ofocus/20080725143149=agtzH79x5ez.client HTTP/1.1" 200 1002
[25/Jul/2008:15:21:04 +0000] "GET /webdav/OmniFocus.ofocus/20080725133144=agtzH79x5ez.client HTTP/1.1" 200 1002
[25/Jul/2008:15:21:04 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:05 +0000] "PROPFIND /webdav/OmniFocus.ofocus/ HTTP/1.1" 207 456
[25/Jul/2008:15:21:05 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:06 +0000] "PROPFIND /webdav/OmniFocus.ofocus/ HTTP/1.1" 207 4591

And the failed iPhone sync
[25/Jul/2008:15:21:27 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 406 -
[25/Jul/2008:15:21:29 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:32 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:34 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:37 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:40 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:43 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:46 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:49 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:51 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:54 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:56 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:21:58 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:22:01 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:22:04 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259
[25/Jul/2008:15:22:06 +0000] "PROPFIND /webdav/OmniFocus.ofocus HTTP/1.1" 301 259