title: PlantUML extension for Visual Studio Code on Windows only working with sequence diagrams
body: <p>I installed the <a href="https://marketplace.visualstudio.com/items?itemName=jebbs.plantuml" rel="noreferrer">PlantUML extension (by jebbs)</a> in Visual Studio Code for Windows and everything is working perfectly for <strong>sequence</strong> diagrams.</p>
  
  <p>However when I try to render a <strong>class</strong> diagram I get the message:</p>
  
  <blockquote>
    <p>Dot Executable: \opt\local\bin\dot<br>
    File does not exist<br>
    Cannot find Graphviz</p>
  </blockquote>
  
  <p>Screencap of full error message:</p>
  
  <p><a href="https://i.stack.imgur.com/Jxpa7.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Jxpa7.png" alt="Dot Executable does not exist error"></a></p>
  
  <p>When I try the example <code>@startuml testdot @enduml</code> code specified I get the following error:</p>
  
  <blockquote>
    <p>The environment variable GRAPHVIZ_DOT has been set to /opt/local/bin/dot<br>
    Dot executable is \opt\local\bin\dot</p>
  </blockquote>
  
  <p>Screencap of full error message:</p>
  
  <p><a href="https://i.stack.imgur.com/jfUmy.png" rel="noreferrer"><img src="https://i.stack.imgur.com/jfUmy.png" alt="GRAPHVIZ_DOT has been set error"></a></p>
  
  <p>Any ideas where this has been specified such that I can override it (assuming this is what the problem is)? It hasn't been added to the system or user environment variables that I can see.</p>