ember.js - #if statement throws TypeError: node is undefined -


consider below snippet in handlebar written ember.js:

<script type="text/x-handlebars" id="courses/selectedcourse">     <div id="selectedcourse">      {{#if isregistered}}         <div class="xx">             registered course         </div>         {{else}}             <div class="yy">                 <button {{action registerforcourse}}>register</button>             </div>      {{/if}}          <h1>{{coursetitle}}</h1>                     <div class="selectedcourseitem">                         <img id="selectedcourse" {{bindattr src="imageurl"}}/>         </div>      </div> </script>

issue1 : content not getting refreshed after registering course.

issue2 : on changing selected courses couple of times, content displayed twice , overlapping.

following message see in firebug:

typeerror: node undefined

[break on error]

node.unchain(key, path);

if remove #if statement, works well.

what doing wrong?

i had similar issue , fixed making first letter of argument in if statement lower case

{{#if isregistered}}

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