Hi,<br><br>I&#39;ve found a few senders of #isSystemDefined when trying to run the pharo dev test suite, and I don&#39;t know what is the expected behavior.<br><br>I&#39;ve read in: <a href="http://www.mail-archive.com/pharo-project@lists.gforge.inria.fr/msg12075.html" target="_blank">http://www.mail-archive.com/pharo-project@lists.gforge.inria.fr/msg12075.html</a> that the idea is to remove the message and all it&#39;s senders, but I don&#39;t know why is used here in Nile. <br>


<br>The senders are in�NSSmartRefStream, inside of #uniClassInstVarsRefs:, #uniClasesDo: and #beginInstance:size:<br><br>Any hint on this will be appreciated.<br><br>Cheers,<br><br clear="all">Mariano.<br>