Install Ionic v2.0.0-beta.19 but ionic serve no more working?

Hi, I’ve just installed Ionic latest version 2.0.0-beta.19, Node v3.3.5, Cordova v6.0.0, I try to view the tutorial starter app in browser using command ionic serve but nothing happen, I’m back pointing to my directory, I did success browse the app few days ago, is it because of latest Ionic release?

Anybody can help? Still cannot use the command ionic serve, since nothing happen, I got no way to troubleshoot except clean and reinstall everything.

Ok, I got it working by creating a new folder on desktop, so it means something wrong with the folder structrure maybe, anyway I’ll just use the new folder