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<p class="MsoPlainText"><span lang="EN-US">I installed LyX 2.3.5 a couple of days ago (?), and it worked fine. (Windows 10 64bit, latest version.)<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black">Today, one of my students tried to install some template for LyX 2.3.5, and messed around with MikTeX. But in the end that didn't work. So in the end, I uninstalled MikTeX, Inkscape, and LyX, and
re-installed the programs.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black">Now I get this error message:<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black"><img width="355" height="254" style="width:3.6979in;height:2.6458in" id="Picture_x0020_1" src="cid:image001.png@01D63E81.787A1BA0"></span><span lang="EN-US" style="color:black"><o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black">When I try to open a template.<o:p></o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black"><o:p> </o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoPlainText" style="color:black;mso-list:l0 level1 lfo1"><span lang="EN-US">What has gone wrong? Why is “extarticle.cls” missing?<o:p></o:p></span></li><li class="MsoPlainText" style="color:black;mso-list:l0 level1 lfo1"><span lang="EN-US">How can I fix it?<o:p></o:p></span></li></ul>
<p class="MsoPlainText"><span lang="EN-US" style="color:black"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span lang="EN-US" style="color:black">-B<o:p></o:p></span></p>
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