Idea 12.1

Now that 12.1 is out, how long before an updated Kotlin should be expected? Would like to upgrade, but don't want to lose my Kotlin.

It will be out in half an hour or so :)

It's there. Thanks for your patience.

After the update, my project appears to be a disaster. Getting constant errors:

7:54:37 PM IllegalStateException: classpath is configured incorrectly: class jet.Tuple0 from runtime must not be loaded by compiler: classpath is configured incorrectly: class jet.Tuple0 from runtime must not be loaded by compiler

I figured this is because of some library conflicts, but I can't find anything.

Have you updated kotlin library (kotlin-runtime.jar)? There should be a warning in your event log.

I got it worked out. I had my Maven project still pointing to the old version, so it kept reimporting it.