[2011-07-01 05:42:24.263811] invalid database.engine

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{
   # network ports
   "listen" : [
      # binary protocol (default), port 8342
      { "port" : 8342 },

      # HTTP JSON-RPC protocol, port 8341
      { "port" : 8347, "protocol" : "http-json" },

      # HTTP JSON-RPC protocol, port 8344,
      #proxy is most likely your external ip address if your running a public pool | Public pools WON'T have the following ip addresses: (10.0.0.1, 127.0.0.1, 192.168.1.100, or 192.168.254.254,etc,etc)
      # requests to us | "proxy" should be set to your ip address that people will connect through
      { "port" : 8344, "protocol" : "http-json",
        "proxy" : "208.111.40.205" },

      # binary protocol, localhost-only port 8338
      # host is most likely your localhost address
      { "host" : "127.0.0.1", "port" : 8338, "protocol" : "binary" }
   ],

   # database settings
   "database" : {
      "engine" : "mysql",

      "host" : "localhost",

      "port" : 3306,

      #database name
      "name" : "pushpool",
      #database username
      "username" : "root",
      #database password
      "password" : "xxxxxxxx",
      #enable sharelog | to insert share data or sometimes known as "work"
      "sharelog" : true,
      "stmt.pwdb":"SELECT password FROM pool_worker WHERE username = ?",

      "stmt.sharelog":"INSERT INTO shares (rem_host, username, our_result, upstream_result, reason, solution) VALUES (?, ?, ?, ?, ?, ?)"

   },

   #uncoment this when you want to use memcached (Recommended for servers over 1.5gb of ram)
   # cache settings
   "memcached" : {
      "servers" : [
         { "host" : "127.0.0.1", "port" : 11211 }
      ]
   },

   "pid" : "/tmp/pushpoold.pid",

   # overrides local hostname detection
   "forcehost" : "localhost.localdomain",

   "log.requests" : "/tmp/request.log",
   "log.shares" : "/tmp/shares.log",

   # the server assumes longpolling (w/ SIGUSR1 called for each blk)
   "longpoll.disable" : false,

   # length of time to cache username/password credentials, in seconds
   "auth.cred_cache.expire" : 75,

   # RPC settings
   #Bitcoind Protocal settings
   #Host were bitcoind can be found on the network
   "rpc.url" : "http://127.0.0.1:8332/",
   #Username & password to connect to bitcoind
   "rpc.user" : "user",
   "rpc.pass" : "pass",

   # rewrite returned 'target' to difficulty-1?
   "rpc.target.rewrite" : true
}