another question: Going from Kotlin 1.1.3-2 to *.4

plugins {
    id "application"
    id "idea"
//    id "org.jetbrains.kotlin.jvm" version "1.1.3-2"
    id "org.jetbrains.kotlin.jvm" version "1.1.4"
    id "me.champeau.gradle.jmh" version "0.4.4" // does not work with Gradle 4.1
}

I am getting

Exception in thread "main" java.nio.file.NoSuchFileException: C:\Users\alex\my\project\loxal\muctool\build\classes\java\main
        at sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:79)

for some reason the plugin assumes I have a Java project despite not having any Java files at all in my project.