Upgraded to Intellij IDEA 2016.2.5 this morning and started getting errors that look like this when importing the samples from the latest gradle-script-kotlin master branch:
org.jetbrains.kotlin.resolve.ExternalOverridabilityCondition: Provider org.jetbrains.kotlin.load.java.JavaIncompatibilityRulesOverridabilityCondition not found
Could not initialize class org.jetbrains.kotlin.resolve.OverridingUtil
Could not initialize class org.jetbrains.kotlin.resolve.OverridingUtil
I did not see these errors before the upgrade.