IntelliJ IDEA Kotlin plugin - "there aren't configurators available"

I had this same problem in Android Studio 3.0 Canary 1. Cneal build, Synchronize, Invalidate Caches and Restart didn't help.

The only thing that worked was to make a change to a build.gradle file and click "Sync now".

I realized the problem was my Gradle plugin was disabled.

This happened to me with Kotlin 1.3 and IntelliJ 2018.2.6.

I tried all the above solutions listed---none of them worked until I actually deleted the .idea folder and .iml file from my Kotlin gradle project directory and then re-imported them in IDEA, then all was well.