Amportal Problems

My asterisk server was working perfectly when i set up free pbx my asterisk server can t loaded anymore.
a tail on my log

[Dec 21 00:00:25] VERBOSE[9075] logger.c: app_settransfercapability.so => (Set ISDN Transfer Capability)
[Dec 21 00:00:25] VERBOSE[9075] logger.c:   == Registered custom function RAND
[Dec 21 00:00:25] VERBOSE[9075] logger.c: func_rand.so => (Random number dialplan function)
[Dec 21 00:00:25] VERBOSE[9075] logger.c:   == Parsing '/etc/asterisk/vpb.conf': [Dec 21 00:00:25] VERBOSE[9075] logger.c: Found
[Dec 21 00:00:25] ERROR[9075] chan_vpb.cc: VPB Driver not configured
[Dec 21 00:00:25] NOTICE[9075] chan_vpb.cc: VPB driver Registered )
[Dec 21 00:00:25] WARNING[9075] pbx.c: Already have an application 'VoiceMail'
[Dec 21 00:00:25] WARNING[9075] pbx.c: Already have an application 'VoiceMailMain'
[Dec 21 00:00:25] WARNING[9075] pbx.c: Already have an application 'MailboxExists'
[Dec 21 00:00:25] WARNING[9075] pbx.c: Already have an application 'VMAuthenticate' 

Any solutions!!thanks

hello:
I think your freepbx has overwriteen some config files under /etc/asterisk.
do you have the backup of that directory? or just noload those modules in modules.conf.
regards!
James.zhu