<p>I vaguely remember struggling with the same issue. If I remember correctly we were producing invalid html (nested forms). </p>
<p>Check if one of the resources you are rendering does not produce a form tag. </p>
<p>If you inspect the back button when it does not work with the browsers dom inspector. You will be able to see if it is still rendered under the correct form tag.</p>
<div class="gmail_quote">On Apr 5, 2012 11:10 PM, &quot;Lawrence Kellogg&quot; &lt;<a href="mailto:mac.hive@me.com">mac.hive@me.com</a>&gt; wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
  I noticed a weird issue with rendering the Back button. If I have<br>
<br>
renderBackButtonOn: html<br>
        html break.<br>
        html cancelButton<br>
                class: &#39;btn&#39;;<br>
                callback: [ self back ];<br>
                value: &#39;Back&#39;.<br>
        html break<br>
<br>
and this:<br>
<br>
back<br>
        self answer: false<br>
<br>
and then this:<br>
<br>
        html<br>
                form: [<br>
                        self renderBackButtonOn: html.<br>
<br>
                        self resources do: [: each | html render: each].<br>
<br>
                        self renderBackButtonOn: html].<br>
<br>
<br>
I often see the case where the first rendering of the Back button works correctly, but the last render does not work. I press the button and nothing happens. Any idea what is going on here?<br>
<br>
  Regards,<br>
<br>
  Larry Kellogg<br>
  <a href="http://www.practicemusic.com" target="_blank">www.practicemusic.com</a><br>
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</blockquote></div>