DNS reverse resolution Error in named Configuration:zone centos.vbird/in:loaded serial 2011080401

[Root@master ~]#/etc/init.d/named Restart
Stop named: [OK]
Start named:
Error in Named configuration:
Zone centos.vbird/in:loaded Serial 2011080401
Dns_master_load:named.192.168.100:2: unexpected end of line
Dns_master_load:named.192.168.100:1: Unexpected end of input
Named.192.168.100:3: Using RFC1035 TTL semantics
Zone 100.168.192.in-addr.arpa/in:loading from master file named.192.168.100 failed:unexpected end of input
Zone 100.168.192.in-addr.arpa/in:not loaded due to errors.
_default/100.168.192.in-addr.arpa/in:unexpected End of input
Failed
This problem occurred, I said the search for a long time, finally found that a symbol of the problem,