title: Creating a new Maven Scala project in Eclipse results in 4 errors
body: <p><strong>Edit 2:</strong> I seem to have discovered the problem: the JAR files that were downloaded to my m2 repository are corrupt:</p>
  
  <p><img src="https://i.stack.imgur.com/m7aVI.png" alt="enter image description here"></p>
  
  <p>It seems to me that they could be causing the problems. But why are they corrupt? And how can I fix that?</p>
  
  <p><strong>Edit:</strong> I've ran <code>mvn eclipse:clean eclipse:eclipse</code> in the project, and it completed successfully... and introduced 5 additional errors:</p>
  
  <p><img src="https://i.stack.imgur.com/7XtcI.png" alt="enter image description here"></p>
  
  <p>On another PC I've created a Scala Maven project using the m2eclipse and Scala IDE plugins for Eclipse. I don't remember any errors. Then I pushed it to GitHub.</p>
  
  <p>I then proceeded to clone the project on my laptop, but I was first greeted with this (error) message:</p>
  
  <p><img src="https://i.stack.imgur.com/qKW0N.png" alt="enter image description here"></p>
  
  <p>After selecting <code>yes</code>, what seemed to be the logical step, these errors appeared:</p>
  
  <p><img src="https://i.stack.imgur.com/MdXS5.png" alt="enter image description here"></p>
  
  <p>What's going on and how can I fix it?</p>
  
  <p>(Linux, Elementary OS)</p>