Realtime with MySQL on Ubuntu

I have installed asterisk-addons and have changed all config files for Mysql realtime intergration but i keep getting the following message whenever asterisk loads “[Nov 2 12:09:46] WARNING[17304]: config.c:2010 find_engine: Realtime mapping for ‘sippeers’ found to engine ‘mysql’, but the engine is not available”

I am wondering if you fix this problem, since I face the same problem at moment