problem deploying my solidity code to Ethereum

compile-and-deploy.js

var Web3 = require('../index.js'); // i'm running this from the example directory of web3
var web3 = new Web3();

web3.setProvider(new web3.providers.HttpProvider('http://0.0.0.0:8545'));
web3.eth.defaultAccount = web3.eth.coinbase;

// var source = 'contract L { function f() returns (uint) { return 7; } }';
var source = 'contract L { function f() returns (uint); }'+
'contract X { L l; function X(L lib) { l = lib; } function y() returns (uint) { uint z = 46 + l.f(); return z; } }';

var compiled = web3.eth.compile.solidity(source);
var code = compiled.X.code;
var abi = compiled.X.info.abiDefinition;

//                          address of L contract
web3.eth.contract(abi).new("0xa..snipped...543", {data: code}, function (err, contract) {
    if (err) {
        console.error("ERROR: " + err);
        return;

    } else if(contract.address){
        console.log('address: ' + contract.address);

    } else {
        console.log("Transmitted, waiting for mining...");
    }
});