Webdavnav and sync issues

Hi there, still trying to get this one to work. I’ve got a local WebDAV server setup using webdavnav. Mac connects just fine, logs into server and the first time I conduct a sync the full 1.1 MB database appears in the correct linked folder as expected.

However, subsequent syncs seem to override the 1.1mb sync file with a 567 kB file! I now can’t seem to get the full file to appear in the sync location.

Related question - do the trial versions of iOS OmniFocus disable WebDAV use? I’m trying to test this works before I buy, but the iPad trial version I have won’t connect to my local Mac WebDAV server… it doesn’t even ask for the log on credentials (as does happen on the mac version).