IntelliJ 14 Scala Editor showing errors

I just uninstalled IntelliJ 13 and installed 14 (Community Edition). I installed jdk and then installed the Scala plugin and created a new Scala> SBT project. He asked me to set up the Scala SDK, which I made. I enabled auto-import and it created src. etc. Then I created a Scala class. It compiles and works fine. However IntelliJ showcases built-in Scala things as bugs. For example:

For some reason intellij shows all Scala libraries as errors. However, the program compiles and works fine. Has anyone else encountered this?