# Can't start Android app after updating to beta.4

**URL:** <https://forum.ionicframework.com/t/cant-start-android-app-after-updating-to-beta-4/48795>\
**Category:** ionic-v3\
**Created:** [April 8, 2016, 11:08am UTC](https://forum.ionicframework.com/t/cant-start-android-app-after-updating-to-beta-4/48795 "2016-04-08T11:08:26Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![iignatov](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/iignatov/32/100112_2.png) [@iignatov](https://forum.ionicframework.com/u/iignatov)\
**Post date:** [April 8, 2016, 2:07pm UTC](https://forum.ionicframework.com/t/cant-start-android-app-after-updating-to-beta-4/48795/4 "2016-04-08T14:07:08Z")

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Assuming that you created a new JS project from scratch with the latest beta and then updated the files as in the workaround from the link that you provided, then I would suggest you to make sure that you imported `es6-shim` in `app.js` _(see step 4 above)_, i.e. make sure to add the following line at the top of `app.js`:

```auto
import 'es6-shim';

```

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