In the current beta ( v2.0.0-beta.5 ) in conjunction with Sass Sass 3.4.13 , there seems to be a bug with @import inside @if . This is not allowed.
Comment on the @if structure in node_modules/iconic_angular/components.core.scss to look like this:
$ionicons: true !default; // @if ($ionicons) { @import "fonts/ionicons"; // }
In addition, there is a problem with some declarations in the Sass file for Windows. If you don't need Windows, now you can change the sass include defintion in node_modules/ionic-gulp-sass-build/index.js to read (so remove the include for windows).
... src: 'app/theme/app.+(ios|md).scss', ...
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