snort-mysql mode bridge nao inicia no ubuntu server

quem poderia me ajudar por favor , estou a semanas tentando implanta snort mais não consigo , sempre que vou starta ele da esse erro, quem poder me ajudar eu agradeço
galera me ajude por favor kkkk.
quero que ele fucione no mode bridge , a bridge já esta criada .

alert_fragments: INACTIVE
alert_large_fragments: INACTIVE
alert_incomplete: INACTIVE
alert_multiple_requests: INACTIVE
FATAL ERROR: Failed to initialize dynamic engi ne: SF_SNORT_DETECTION_ENGINE version 2.1.1
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versão do snort e versão do linux ubuntu

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,,_ -*> Snort! <*-
o" )~ Version 2.9.2 IPv6 GRE (Build 78)
'''' By Martin Roesch & The Snort Team: http://www.snort.org/snort/snort-team
Copyright (C) 1998-2011 Sourcefire, Inc., et al.
Using libpcap version 1.5.3
Using PCRE version: 8.31 2012-07-06
Using ZLIB version: 1.2.8

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DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"
NAME="Ubuntu"
VERSION="14.04.1 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.1 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"