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    Many thanks Andrew for following this up so quickly. I'll try and do
    this tomorrow, then... Busy day ahead!<br>
    Best,<br>
    Graham.<br>
    <br>
    <div class="moz-cite-prefix">Le 23/03/2020 à 21:11, Hardie, Andrew a
      écrit :<br>
    </div>
    <blockquote type="cite"
cite="mid:CWLP265MB1204BA5321B75EC61A383545CBF00@CWLP265MB1204.GBRP265.PROD.OUTLOOK.COM">
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        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">OK,
            this sounds like a case of an old bug that I was never able
            to reproduce, but which I got multiple reports of, where
            some errors would cause the entire CWB index directory to be
            deleted. You need to have a look at the filesystem to see
            whether that’s the case. (Path is specified in
            config.inc.php)<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">If
            this is the problem, there’s no fix except to restore the
            directory from backup. If you don’t have backups then you
            need to delete and reinstall all broken corpora.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">But
            before you do so I’d recommend upgrading to 3.2.42 which has
            better defensive measures against this bug.
            <o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">best<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Andrew.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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          <div style="border:none;border-top:solid #E1E1E1
            1.0pt;padding:3.0pt 0cm 0cm 0cm">
            <p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span
                lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:cwb-bounces@sslmit.unibo.it">cwb-bounces@sslmit.unibo.it</a>
                <a class="moz-txt-link-rfc2396E" href="mailto:cwb-bounces@sslmit.unibo.it">&lt;cwb-bounces@sslmit.unibo.it&gt;</a>
                <b>On Behalf Of </b>graham.ranger<br>
                <b>Sent:</b> 23 March 2020 18:48<br>
                <b>To:</b> Open source development of the Corpus
                WorkBench <a class="moz-txt-link-rfc2396E" href="mailto:cwb@sslmit.unibo.it">&lt;cwb@sslmit.unibo.it&gt;</a><br>
                <b>Subject:</b> Re: [CWB] Corpus undefined error<o:p></o:p></span></p>
          </div>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
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          <div>
            <p class="MsoNormal">Hi Andrew,<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">This is an old corpus that worked until
              now. I think the MySQL indexes are broken, at least that
              was the problem last time round.<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Best,<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Graham.<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div id="composer_signature">
            <div>
              <p class="MsoNormal"><span
                  style="font-size:9.5pt;color:#575757">Envoyé depuis
                  mon smartphone Samsung Galaxy.<o:p></o:p></span></p>
            </div>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <div>
              <p class="MsoNormal"><span style="color:black">--------
                  Message d'origine --------<o:p></o:p></span></p>
            </div>
            <div>
              <p class="MsoNormal"><span style="color:black">De :
                  "Hardie, Andrew" &lt;<a
                    href="mailto:a.hardie@lancaster.ac.uk"
                    moz-do-not-send="true">a.hardie@lancaster.ac.uk</a>&gt;
                  <o:p></o:p></span></p>
            </div>
            <div>
              <p class="MsoNormal"><span style="color:black">Date :
                  23/03/2020 19:36 (GMT+01:00)
                  <o:p></o:p></span></p>
            </div>
            <div>
              <p class="MsoNormal"><span style="color:black">À : Open
                  source development of the Corpus WorkBench &lt;<a
                    href="mailto:cwb@sslmit.unibo.it"
                    moz-do-not-send="true">cwb@sslmit.unibo.it</a>&gt;
                  <o:p></o:p></span></p>
            </div>
            <div>
              <p class="MsoNormal"><span style="color:black">Objet : Re:
                  [CWB] Corpus undefined error
                  <o:p></o:p></span></p>
            </div>
            <div>
              <p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
            </div>
          </div>
          <div>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi
                Graham,</span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Is
                TOWERS_BETA the new corpus you tried to install, or an
                old corpus you had installed previously?</span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">best</span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Andrew</span><o:p></o:p></p>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:&quot;Verdana&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"> </span><o:p></o:p></p>
            <div>
              <div style="border:none;border-top:solid #E1E1E1
                1.0pt;padding:3.0pt 0cm 0cm 0cm">
                <p class="MsoNormal"
                  style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span
                      lang="EN-US">From:</span></b><span lang="EN-US">
                    <a href="mailto:cwb-bounces@sslmit.unibo.it"
                      moz-do-not-send="true">cwb-bounces@sslmit.unibo.it</a>
                    &lt;<a href="mailto:cwb-bounces@sslmit.unibo.it"
                      moz-do-not-send="true">cwb-bounces@sslmit.unibo.it</a>&gt;
                    <b>On Behalf Of </b>Graham Ranger -- UAPV<br>
                    <b>Sent:</b> 23 March 2020 15:33<br>
                    <b>To:</b> <a href="mailto:cwb@sslmit.unibo.it"
                      moz-do-not-send="true">cwb@sslmit.unibo.it</a><br>
                    <b>Subject:</b> [CWB] Corpus undefined error</span><o:p></o:p></p>
              </div>
            </div>
            <p class="MsoNormal"
              style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
            <div>
              <p class="MsoNormal"
                style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello
                to all,<br>
                I've just tried to install a new corpus on my server
                with cwpweb 3.2.30. Everything has been running
                perfectly but... 1) the installation failed and 2)
                nothing now works; I get the following message with
                queries, for example: Corpus ``TOWERS_BETA'' is
                undefined<br>
                Any help on<br>
                1) what I have done to provoke this and<br>
                2) how I can set things back to rights<br>
                would be very, very much appreciated!<br>
                Best,<br>
                Graham.<o:p></o:p></p>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
CWB mailing list
<a class="moz-txt-link-abbreviated" href="mailto:CWB@sslmit.unibo.it">CWB@sslmit.unibo.it</a>
<a class="moz-txt-link-freetext" href="http://liste.sslmit.unibo.it/mailman/listinfo/cwb">http://liste.sslmit.unibo.it/mailman/listinfo/cwb</a>
</pre>
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