Login fails with socket error

I have a Ubuntu 16.04 server I'm testing Centrify Express with; I've set up the service (version CentrifyDC 5.4.2-668) with the --express flag and can join the domain successfully (confirmed by adinfo).  However, no AD users can log in.  With debug turned on, I'm seeing these errors.  Same if I include domain in username.

Nov 09 14:23:38 sshd[2774] DEBUG: -> getpwnam_centrifydc_r user="sshd"
Nov 09 14:23:38 sshd[2774] DEBUG: User="sshd" str2ent=(nil) result=0x7f63365a2d80, buffer=0xbc8a16dce0
Nov 09 14:23:38 sshd[2774] DEBUG: User 'sshd' is not an override user
Nov 09 14:23:38 sshd[2774] DEBUG: getpwnam: User 'sshd' is in 'pam.ignore.users' list
Nov 09 14:23:38 sshd[2774] DEBUG: <- getpwnam_centrifydc_r, result=NSS_NOTFOUND(0)
Nov 09 14:23:41 sshd[2774] DEBUG: Failed to open logging connection to adclient through '/var/centrifydc/daemon2': Socket error
Nov 09 14:23:41 sshd[2774] DEBUG: -> getpwnam_centrifydc_r user="steve-admin"
Nov 09 14:23:41 sshd[2774] DEBUG: User="steve-admin" str2ent=(nil) result=0x7f63365a2d80, buffer=0xbc8a16dce0
Nov 09 14:23:41 sshd[2774] DEBUG: User 'steve-admin' is not an override user
Nov 09 14:23:41 sshd[2774] DEBUG: Failed to open connection to adclient through '/var/centrifydc/daemon2' Socket error (No such file or directory)
Nov 09 14:23:41 sshd[2774] DEBUG: <- getpwnam_centrifydc_r, result=NSS_UNAVAIL(-1)
Nov 09 14:23:41 sshd[2776] DEBUG: Failed to open logging connection to adclient through '/var/centrifydc/daemon2': Socket error
Nov 09 14:23:41 sshd[2776] DEBUG: -> pam_sm_authenticate
Nov 09 14:23:41 sshd[2776] DEBUG: PAM Options: (none)
Nov 09 14:23:41 sshd[2776] DEBUG: PAM Flags: DISALLOW_NULL_AUTHTOK
Nov 09 14:23:41 sshd[2776] DEBUG: Failed to open connection to adclient through '/var/centrifydc/daemon2' Socket error (No such file or directory)
Nov 09 14:23:41 sshd[2776] DEBUG: All local users are APU.
Nov 09 14:23:41 sshd[2776] INFO: Authentication for user 'steve-admin': access allowed in emergency mode.
Nov 09 14:23:41 sshd[2776] DEBUG: pam_sm_common() failed 9
Nov 09 14:23:41 sshd[2776] DEBUG: Can't open /usr/share/centrifydc/lib64/libatda.so (/usr/share/centrifydc/lib64/libatda.so: cannot open shared object file: No such file or directory).
Nov 09 14:23:41 sshd[2776] INFO: AUDIT_TRAIL|Centrify Suite|PAM|1.0|100|PAM authentication granted|5|user=steve-admin pid=2776 utc=1510255421000 DASessID=N/A DAInst=N/A status=GRANTED service=sshd tty=ssh client=192.168.65.27 reason=User is always permitted to login