# The steps to upgrade to ember 1.10 + htmlbars don't work for me at all

**URL:** <https://discuss.emberjs.com/t/the-steps-to-upgrade-to-ember-1-10-htmlbars-dont-work-for-me-at-all/6915>\
**Category:** Uncategorized\
**Created:** [December 14, 2014, 9:08pm UTC](https://discuss.emberjs.com/t/the-steps-to-upgrade-to-ember-1-10-htmlbars-dont-work-for-me-at-all/6915 "2014-12-14T21:08:31Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![mgenev](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/mgenev/32/5208_2.png) [@mgenev](https://discuss.emberjs.com/u/mgenev)\
**Post date:** [December 14, 2014, 9:08pm UTC](https://discuss.emberjs.com/t/the-steps-to-upgrade-to-ember-1-10-htmlbars-dont-work-for-me-at-all/6915/1 "2014-12-14T21:08:32Z")

</div>

I start a fresh project with ember-cli, I follow the steps outlined here [Ember.js 1.9.0 and 1.10 Beta Released](http://emberjs.com/blog/2014/12/08/ember-1-9-0-released.html)

```
rm -rf bower_components
bower install --save ember#beta
bower install
npm uninstall --save-dev broccoli-ember-hbs-template-compiler
npm install --save-dev ember-cli-htmlbars

```

When I try to use the new block syntax it breaks the build and says:

```
Build failed.
File: ember2/templates/index.hbs
Parse error on line 2:
...}}{{#each model as |post|}}	<h3>{{post
----------------------^
Expecting 'CLOSE_RAW_BLOCK', 'CLOSE', 'CLOSE_UNESCAPED', 'STRING', 'NUMBER', 'BOOLEAN', 'OPEN_SEXPR', 'CLOSE_SEXPR', 'ID', 'EQUALS', 'DATA', 'SEP', got 'INVALID'
Error: Parse error on line 2:
...}}{{#each model as |post|}}	<h3>{{post

```

When I remove the usage of block params, it does build, but when I try to hit any route in the browser, I get a blank screen and an error saying:

```
Uncaught Error: Assertion Failed: template must be a function. Did you mean to call Ember.Handlebars.compile("...") or specify templateName instead?

```

Does anybody know what’s wrong?

_ **EDIT** _

I was informed on github that there is an additional step not mentioned in the blog, adding this config:

```
EmberENV: {
  FEATURES: {
    'ember-htmlbars': true
  }
},

```

It works well now.

---

<div class="post-metadata">

**Author:** ![jessica](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/jessica/32/16014_2.png) [@jessica](https://discuss.emberjs.com/u/jessica)\
**Post date:** [June 10, 2015, 6:25pm UTC](https://discuss.emberjs.com/t/the-steps-to-upgrade-to-ember-1-10-htmlbars-dont-work-for-me-at-all/6915/2 "2015-06-10T18:25:35Z")

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@mgenev Can you supply the explanation from github as a link for completeness? Or can someone clarify which file I have to edit to enable html-bars? Would be great!

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<div class="post-metadata">

**Author:** ![mgenev](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/mgenev/32/5208_2.png) [@mgenev](https://discuss.emberjs.com/u/mgenev)\
**Post date:** [June 10, 2015, 6:38pm UTC](https://discuss.emberjs.com/t/the-steps-to-upgrade-to-ember-1-10-htmlbars-dont-work-for-me-at-all/6915/3 "2015-06-10T18:38:41Z")

</div>

hey @jessica this was regarding the beta at the time, right now you can simply use Ember 1.12 and soon 1.13 and htmlbars is enabled out of the box

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<div class="post-metadata">

**Author:** ![jessica](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/jessica/32/16014_2.png) [@jessica](https://discuss.emberjs.com/u/jessica)\
**Post date:** [June 10, 2015, 8:39pm UTC](https://discuss.emberjs.com/t/the-steps-to-upgrade-to-ember-1-10-htmlbars-dont-work-for-me-at-all/6915/4 "2015-06-10T20:39:32Z")

</div>

@mgenev I am trying to update my ember-app from 1.8 to 1.12 right now and will get a very similar error as you posted above when starting the server, but you just mentioned that htmlbars should come with ember 1.12 just out of the box. Did I miss adding another specific dependency since I didn’t upgrade gradually but from ember v1.8 directly? Which files would I check first to debug this error?