title: "Error: Could not find or load main class com.intellij.rt.execution.application.AppMain" when running an app in intellij
body: <p>I am seeing this error happening intermittently on a small pretty simple scala project in version 2016.1.</p>
  
  <p>I have tried rebuilding project, shutting down intellij and restarting. They do not seem to help.</p>
  
  <p>Anyone have experience with this and/or a a workaround?</p>