<div class="gmail_quote">On Tue, Sep 25, 2012 at 1:14 AM, klo uo wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Could it be some Tornado issue?<br>Should try to reinstall it?<br>
</blockquote></div><br>It&#39;s probably not, as now it doesn&#39;t show such error log, but instead (I pretty-printed by hand to be readable):<br><br><span style="font-family:courier new,monospace">[IPKernelApp]<br>*** MESSAGE TYPE:execute_request***<br>
[IPKernelApp]    Content: {u&#39;user_variables&#39;: [], u&#39;allow_stdin&#39;: False, u&#39;code&#39;: u&#39;2+2&#39;, u&#39;silent&#39;: False, u&#39;user_expressions&#39;: {}}<br>   ---&gt;<br><br>[IPKernelApp] <br>{&#39;parent_header&#39;: <br>
    {u&#39;username&#39;: u&#39;username&#39;, <br>     u&#39;msg_id&#39;: u&#39;14C904AA1C314C66A86985C25A01EE47&#39;,<br>     u&#39;msg_type&#39;: u&#39;execute_request&#39;,<br>     u&#39;session&#39;: u&#39;13EA951864F64D01B101FDD3F4C55FEB&#39;<br>
    },<br>    &#39;msg_type&#39;: u&#39;execute_reply&#39;,<br>    &#39;msg_id&#39;: &#39;74d3582d-299e-47e0-9fe4-1f8a68ae499f&#39;,<br>    &#39;content&#39;: {&#39;status&#39;: u&#39;ok&#39;,<br>    &#39;execution_count&#39;: 1,<br>
    &#39;user_variables&#39;: {},<br>    &#39;payload&#39;: [],<br>    &#39;user_expressions&#39;: {}<br>    },<br>    &#39;header&#39;: {&#39;username&#39;: u&#39;kernel&#39;,<br>    &#39;msg_type&#39;: u&#39;execute_reply&#39;,<br>
    &#39;msg_id&#39;: &#39;74d3582d-299e-47e0-9fe4-1f8a68ae499f&#39;,<br>    &#39;version&#39;: [0, 14, 0, &#39;dev&#39;],<br>    &#39;session&#39;: u&#39;f81d7b1a-e03c-45e1-b80d-b7e11364b636&#39;,<br>    &#39;date&#39;: datetime.datetime(2012, 9, 25, 1, 18, 13, 203000)<br>
    },<br>    &#39;tracker&#39;: &lt;zmq.core.message.MessageTracker object at 0x013C9630&gt;,<br>    &#39;metadata&#39;: {&#39;dependencies_met&#39;: True,<br>    &#39;engine&#39;: u&#39;6b5b944d-2c8f-4667-867d-467c1143bcbc&#39;,<br>
    &#39;status&#39;: u&#39;ok&#39;,<br>    &#39;started&#39;: datetime.datetime(2012, 9, 25, 1, 18, 13, 156000)<br>    }<br>}</span><br>