From Ubuntu Yves Meunier reported:

How to reproduce :

1. Create an account on www.gmx.com
2. Open a Nautilus Windows and enter the adress "davs://storage-file-eu.gmx.com/" (illustration 03).
  a. do not use "Connect to a server..." it does not work (illustration 02).
  b. do not enter "davs://my_gmx_account@gmx.com@storage-file-eu.gmx.com/" it does not work (Ok, using ".+@.+@.+" as url is a strange idea. But the remplacement string is not evident).
  c. do not use "nautilus davs://storage-file-eu.gmx.com/" in a terminal, it does not work either. The strange error message will be displayed again when connecting using the (illustration 03)'s method until next reboot (illustration 01).
3. Choose a directory within davs://storage-file-eu.gmx.com/ with lots of subdirectories.
4. Use copy and paste in order to copy it to your hard drive (illustration 04).
  a. I tried drag and drop but it does not work.

What happend : I get only one html file listing the countent of the first level of the directory (illustration 05).

What should happend : directories are downloaded recursively and created on the hard drive in order to get the sames files as in the server.

Note : I experimented no problem when uploading files to the server.

Launchpad ref: https://bugs.edge.launchpad.net/ubuntu/+source/gvfs/+bug/529430

Thanks!