Error: Assertion failed: homeScreenIcon has invalid aspect ratio: 7.493480856233244
at window.assertions.assertFunction (http://localhost/phet/git/assert/js/assert.js:21:13)
at validateIconSize (http://localhost/phet/git/joist/js/Screen.js?bust=1486076490109:121:15)
at EEVariablesScreen.Screen [as constructor] (http://localhost/phet/git/joist/js/Screen.js?bust=1486076490109:77:5)
at new EEVariablesScreen (http://localhost/phet/git/expression-exchange/js/variables/EEVariablesScreen.js?bust=1486076490109:37:12)
at http://localhost/phet/git/expression-exchange/js/expression-exchange-main.js?bust=1486076490109:49:9
at window.phetLaunchSimulation (http://localhost/phet/git/joist/js/SimLauncher.js?bust=1486076490109:50:11)
at doneLoadingImages (http://localhost/phet/git/joist/js/SimLauncher.js?bust=1486076490109:60:18)
at Object.launch (http://localhost/phet/git/joist/js/SimLauncher.js?bust=1486076490109:114:9)
at http://localhost/phet/git/expression-exchange/js/expression-exchange-main.js?bust=1486076490109:43:15
at Object.execCb (http://localhost/phet/git/sherpa/lib/require-2.1.11.js:1650:25)