demo won't work

[ymote]

Fresh install of node version 0.8.22. Checked out the git repo of smith.io. Followed the instruction to build the demo. There is error msg as below complaining missing method of 'replace'? Is there anything need update? Thanks.

node server
connect plugin start
Connect server listening at http://localhost:8080
TypeError: Object /^/transport/ser[ver]+/ has no method 'replace'
at Object.exports.attach (/Users/dspfac/home/live4code/smith.io/smith.io-master/node_modules/engine.io/lib/engine.io.js:98:45)
at engineForResource (/Users/dspfac/home/live4code/smith.io/smith.io-master/server-plugin/plugin.js:22:28)
at Object.startup as setup
at startPlugins (/Users/dspfac/home/live4code/smith.io/smith.io-master/demo/node_modules/architect/architect.js:408:20)
at register (/Users/dspfac/home/live4code/smith.io/smith.io-master/demo/node_modules/architect/architect.js:428:13)
at Object.startup as setup
at startPlugins (/Users/dspfac/home/live4code/smith.io/smith.io-master/demo/node_modules/architect/architect.js:408:20)
at register (/Users/dspfac/home/live4code/smith.io/smith.io-master/demo/node_modules/architect/architect.js:428:13)
at Object.startup as setup
at startPlugins (/Users/dspfac/home/live4code/smith.io/smith.io-master/demo/node_modules/architect/architect.js:408:20)