Can't coect to a Samba share using Kerberos

I have a Samba server (which is the domain controller), and a Ubuntu 14.04 Client with a logged user who is authenticated by Kerberos (the client joined to domain with Likewise). The user want to access a network share with this command:

smbclient //OPEN/test -U administrator -W OPEN.LOCAL -R host -k -d 5

But the smbclient prints these errors to the console:

Client started (version 4.1.6-Ubuntu).
Opening cache file at /var/cache/samba/gencache.tdb
tdb(/var/cache/samba/gencache.tdb): tdb_open_ex: could not open file /var/cache/samba/gencache.tdb: Permission denied
tdb(/var/cache/samba/gencache.tdb): tdb_open_ex: could not open file /var/cache/samba/gencache.tdb: No such file or directory
Attempt to open gencache.tdb has failed.
sitename_fetch: No stored sitename for 
Opening cache file at /var/cache/samba/gencache.tdb
tdb(/var/cache/samba/gencache.tdb): tdb_open_ex: could not open file /var/cache/samba/gencache.tdb: Permission denied
tdb(/var/cache/samba/gencache.tdb): tdb_open_ex: could not open file /var/cache/samba/gencache.tdb: No such file or directory
Attempt to open gencache.tdb has failed.
no entry for OPEN#20 found.
resolve_hosts: Attempting host lookup for name OPEN
namecache_store: storing 1 address for OPEN#20: 172.16.0.10
Opening cache file at /var/cache/samba/gencache.tdb
tdb(/var/cache/samba/gencache.tdb): tdb_open_ex: could not open file /var/cache/samba/gencache.tdb: Permission denied
tdb(/var/cache/samba/gencache.tdb): tdb_open_ex: could not open file /var/cache/samba/gencache.tdb: No such file or directory
Attempt to open gencache.tdb has failed.
Coecting to 172.16.0.10 at port 445
 session request ok
Doing spnego session setup (blob length=96)
got OID=1.2.840.48018.1.2.2
got OID=1.2.840.113554.1.2.2
got OID=1.3.6.1.4.1.311.2.2.10
got principal=not_defined_in_RFC4178@please_ignore
cli_session_setup_spnego: using target hostname not SPNEGO principal
kerberos_get_default_realm_from_ccache: Trying to read krb5 cache: FILE:/tmp/krb5cc_1645740532
cli_session_setup_spnego: guessed server principal=cifs/[email protected]
Doing kerberos session setup
ads_krb5_mk_req: smb_krb5_get_credentials failed for cifs/[email protected] (Server not found in Kerberos database)
cli_session_setup_kerberos: spnego_gen_krb5_negTokenInit failed: Server not found in Kerberos database
SPNEGO login failed: Undetermined error
session setup failed: NT_STATUS_UNSUCCESSFUL

My domain: OPEN.LOCAL (short name: OPEN) I can resolve open.local and open domains on the server and client.

How can I solve this problem?