Error with socket.io 1.1

[born2net]

with latest socket release we get an error of:

/var/www/sites/dynasite/htdocs/_msportal/_js/_node/test2.js:38
io.set("store", new RedisStore({
^
TypeError: object is not a function
at Object. (/var/www/sites/dynasite/htdocs/_msportal/_js/_node/test2.js:38:21)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Function.Module.runMain (module.js:501:10)
at startup (node.js:124:16)
at node.js:842:3
worker 30474 died