I've downloaded the latest beta (version 5.6.1, build 4547) to test the new WebDAV feature (thanks for implementing it :-)
The connection is established without problems but then WinSCP doesn't display any remote directory (see attached screenshot).
The root directory should contain a directory named "dav" and the file ".dav_http".
In the log I can see that it detects them but it is not able to transform the information into a directory view.
I don't have such a problem with other programs like NetDrive or a normal web browser.
I wouldn't be surprised if the server-side WebDAV implementation is crap but maybe it is a bug in or an incompatibility with WinSCP that can be fixed?
Thanks and regards,