I'm in Ubuntu 14.04 development branch and I'm having trouble getting HTML5 application working. Following the tutorial, I don't have rss-sample.qml in my project. All I have is js/app.js, index.html, plugins.xml, and rss-sample.desktop. I didn't have HTML5 Touch UI, but HTML5 Tabbed Touch UI as my template.
The error message I have is
I might wait until things get worked out when Ubuntu 14.04 comes out. I didn't modify the code.
Starting ubuntu-html5-app-launcher --www=/home/grayson/Documents/ubuntu-sdk/rss-sample
Setting import path to: /home/grayson/Documents/ubuntu-sdk/rss-sample
WARNING: This project is using the experimental QML API extensions for QtWebKit and is therefore tied to a specific QtWebKit release.
WARNING: The experimental API will change from version to version, or even be removed. You have been warned!
virtual void ContentHubPlugin::registerTypes(const char*)
Could not determine application identifier. HUD will not work properly.
Provide your application identifier in $APP_ID environment variable.
Cannot create CordovaView object.
Falling back on the plain Webview backend.
** (process:8180): WARNING **: Unable to register app: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Invalid application ID