[Samba] Samba 4 latest git failed to provision: DNS

[steve]

More dns problems:

samba --version
Version 4.0.0alpha18-GIT-e32ad9b

bin/tdbbackup: /home/steve/samba-master/bin/shared/private/libtdb.so: 
version `SAMBA_4.0.0ALPHA18_DEVELOPERBUILD' not found (required by 
bin/tdbbackup)
Failed to setup database for BIND, AD based DNS cannot be used
Traceback (most recent call last):
   File "./source4/setup/provision", line 262, in <module>
     useeadb=eadb, next_rid=opts.next_rid, lp=lp)
   File "bin/python/samba/provision/__init__.py", line 1757, in provision
     am_rodc=am_rodc, lp=lp)
   File "bin/python/samba/provision/__init__.py", line 1491, in 
provision_fill
     targetdir=targetdir, site=DEFAULTSITE)
   File "bin/python/samba/provision/sambadns.py", line 990, in setup_ad_dns
     create_samdb_copy(samdb, logger, paths, names, domainsid, domainguid)
   File "bin/python/samba/provision/sambadns.py", line 751, in 
create_samdb_copy
     os.path.join(dns_dir, "sam.ldb"))
   File "bin/python/samba/provision/sambadns.py", line 688, in tdb_copy
     raise Exception("Error copying %s" % file1)
Exception: Error copying /usr/local/samba/private/sam.ldb

Any ideas anyone?
Thanks,
Steve