Error pressing enter after selectAll

[Alfonso Martínez de Lizarrondo]

1. Load the replace by class sample in Firefox.
2. Press the Select All button
3. Press Enter. An error is shown:

   node is null
   http://localhost/ckeditor/_source/plugins/enterkey/plugin.js
   Line 85
   

The error is different than #3505

[Artur Formella]

Could you provide more information? It works for me in FF 2 and 3.

[Alfonso Martínez de Lizarrondo]

Something has changed because now it works, but the generated code is quite different about what it's expected of a single enter key:

<p>
</p>
<p>
	<br />
</p>
<p>
	<br />
</p>

But this thicket is not longer valid.