Multiple scala libraies causing error in intellij?

Question

I am using intellij 14 with scala 2.11.6 installed using home brew and symlink using

ln -s /usr/local/Cellar/scala/2.11.6/libexec/src /usr/local/Cellar/scala/2.1         


        

Answer 1

You have JAR files from multiple versions of scala-library.jar. In order to make the error go away you will have to delete the duplicates. To figure out which version you want to keep, you can view the manifest file inside each JAR:

META-INF/MANIFEST.MF

Inside the manifest file you should see something like this:

Manifest-Version: 1.0
Class-Path:
Implementation-Title: Scala-Library
Implementation-Version: 2.11.4

The error is happening because IntelliJ cannot figure out which version of a given Scala class to use.