title: "Plugin Scala is incompatible with this installation" error with IntelliJ 14
body: <p>From Browse Repositories in IntelliJ 14, the newest Scala plugin is version 1.5.2.</p>
  
  <p><a href="https://i.stack.imgur.com/jIh0O.png" rel="noreferrer"><img src="https://i.stack.imgur.com/jIh0O.png" alt="enter image description here"></a></p>
  
  <p>From the Scala plugin homepage for IntelliJ, the latest version (as of Aug 10, 2015) is 1.7.4. <a href="https://plugins.jetbrains.com/plugin/?id=1347" rel="noreferrer">https://plugins.jetbrains.com/plugin/?id=1347</a></p>
  
  <p>However, when I tried to install it from "Intall plugin from disk ..." after downloading <code>scala-intellij-bin-1.7.4</code>, I got this error:</p>
  
  <p><a href="https://i.stack.imgur.com/dyZSs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dyZSs.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/nX85t.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nX85t.png" alt="enter image description here"></a></p>
  
  <p>What might be wrong?</p>