[Samba] Classicupgrade of 4.1.17 error: "list index out of range"

[MI]

> could you please post the "passdb backend" line of your /etc/samba/smb.conf.PDC 
> file? (or even better post the whole file)?
>

Here it is:

    # cat /etc/samba/smb.conf.PDC
    [global]
         workgroup = MYDOMAIN
         netbios name = LENNY2
         server string = %h server
         interfaces = 127.0.0.0/8, 192.168.99.10/24
         bind interfaces only = yes
         server role = classic primary domain controller
         map to guest = Bad User
         passdb backend = ldapsam
         syslog = 0
         log file = /var/log/samba/log.%m
         server max protocol = NT1
         time server = Yes
         unix extensions = No
         load printers = No
         printcap name = /dev/null
         disable spoolss = Yes
         show add printer wizard = No
         add machine script = /usr/sbin/smbldap-useradd -w "%u"
         logon script = logon-%a.bat
         logon path = \\%N\%U\profile-%a
         logon drive = H:
         domain logons = Yes
         os level = 64
         preferred master = Yes
         domain master = Yes
         wins support = Yes
         ldap admin dn = cn=admin,dc=mydomain,dc=lan
         ldap group suffix = ou=Groups
         ldap machine suffix = ou=Computers
         ldap passwd sync = yes
         ldap suffix = dc=frenetic,dc=lan
         ldap ssl = no
         ldap user suffix = ou=People
         ldap debug level = 0
         panic action = /usr/share/samba/panic-action %d
         ldapsam:trusted = yes
         idmap config * : backend = tdb
         acl allow execute always = Yes
         create mask = 0775
         directory mask = 02775
         force unknown acl user = Yes
         print notify backchannel = No
         printing = bsd
         print command = lpr -r -P'%p' %s
         lpq command = lpq -P'%p'
         lprm command = lprm -P'%p' %j
         hide files = /Maildir/desktop.ini/RECYCLER/PUTTY.RND/lost+found/
         veto oplock files = /*.doc*/*.DOC*/*.xls*/*.XLS*/*.mdb/*.MDB/~$*/
         csc policy = disable
         dos filemode = Yes

    [netlogon]
         comment = Network Logon Service
         path = /etc/samba/netlogon
         write list = @admins
         read only = No

    [homes]
         comment = Home Directories
         read only = No
         create mask = 0700
         directory mask = 0700
         browseable = No

    etc. with all the shares.