[RT-AC56U] Can't connect to file shares

[Morse]

When trying to connect to a file share the connection is refused with any account (admin, defined user etc).

Looking in the Samba log (/var/log.samba) I see messages that are not very reassuring.

[2014/01/18 13:22:09, 0] auth/auth_util.c:get_root_nt_token(501)
  get_root_nt_token: getpwnam"root") failed!
[2014/01/18 13:22:09, 0] auth/auth_util.c:get_root_nt_token(501)
  get_root_nt_token: getpwnam"root") failed!
[2014/01/18 13:22:09, 0] services/services_db.c:svcctl_init_keys(420)
  init_services_keys: key lookup failed! (WERR_ACCESS_DENIED)
[2014/01/18 13:33:34, 0] passdb/pdb_smbpasswd.c:startsmbfilepwent(241)
  startsmbfilepwent_internal: file /etc/samba/smbpasswd did not exist. File successfully created.
[2014/01/18 13:33:47, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 192.168.1.83. Error = Connection reset by peer
admin@RT-AC56U:/tmp/var# cat log.samba
[2014/01/18 13:22:09, 0] auth/auth_util.c:get_root_nt_token(501)
  get_root_nt_token: getpwnam"root") failed!
[2014/01/18 13:22:09, 0] auth/auth_util.c:get_root_nt_token(501)
  get_root_nt_token: getpwnam"root") failed!
[2014/01/18 13:22:09, 0] services/services_db.c:svcctl_init_keys(420)
  init_services_keys: key lookup failed! (WERR_ACCESS_DENIED)
[2014/01/18 13:33:34, 0] passdb/pdb_smbpasswd.c:startsmbfilepwent(241)
  startsmbfilepwent_internal: file /etc/samba/smbpasswd did not exist. File successfully created.
[2014/01/18 13:33:47, 0] lib/util_sock.c:read_data(534)
  read_data: read failure for 4 bytes to client 192.168.1.83. Error = Connection reset by peer

To make certain I had a clean install, I did a reset to factory settings, loaded the latest firmware, but all this without results.

Any suggestions?