title: Prelaunch task build terminated with exit code 1
body: <p>I'm trying to learn how to create method libraries but whenever I run my program a little pop-up window (with a surprisingly basic Windows graphical interface, post-update) shows up with the message "PreLaunch task 'Build' terminated with exit code 1."  </p>
  
  <p>I click on "Show error" and in the "problems" tab I see the message "No problems in the workspace so far."</p>
  
  <p>Does anyone know what's going on?</p>
  
  <p>Here are my launch configurations...</p>
  
  <p><a href="https://i.stack.imgur.com/cbcN6.png" rel="noreferrer">launch configurations</a></p>
  
  <p><img src="https://i.stack.imgur.com/cbcN6.png" alt="launch configurations"></p>
  
  <p><a href="https://i.stack.imgur.com/cIYxK.png" rel="noreferrer">launch configurations 2/2</a></p>
  
  <p><img src="https://i.stack.imgur.com/cIYxK.png" alt="launch configurations 2/2"></p>
  
  <p>Here is a screenshot of that pop-up window bearing the message.</p>
  
  <p><a href="https://i.stack.imgur.com/xFeZY.png" rel="noreferrer">pop-up window</a></p>
  
  <p><img src="https://i.stack.imgur.com/xFeZY.png" alt="pop-up window"></p>
  
  <p>Also, I'm not sure if this is related but I noticed that this stuff started happening after I moved the .NET SDK files to another folder, and also when the debugging shortcut command stopped working.  </p>