intellij-platform-gradle-plugin: java.lang.NoClassDefFoundError

I’m getting the following error when executing ./gradlew runIdea:

Internal error. Please report to http://jb.gg/ide/critical-startup-errors

java.lang.RuntimeException: com.intellij.ide.plugins.PluginManager$StartupAbortedException: Fatal error initializing 'com.intellij.openapi.util.registry.RegistryState'
    at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:201)
    at com.intellij.idea.MainImpl$1$1$1.run(MainImpl.java:63)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
    at java.awt.EventQueue.access$500(EventQueue.java:97)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.awt.EventQueue$3.run(EventQueue.java:703)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:360)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: com.intellij.ide.plugins.PluginManager$StartupAbortedException: Fatal error initializing 'com.intellij.openapi.util.registry.RegistryState'
    at com.intellij.ide.plugins.PluginManager.handleComponentError(PluginManager.java:243)
    at com.intellij.openapi.components.impl.PlatformComponentManagerImpl.handleInitComponentError(PlatformComponentManagerImpl.java:43)
    at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentConfigComponentAdapter.getComponentInstance(ComponentManagerImpl.java:536)
    at com.intellij.openapi.components.impl.ComponentManagerImpl.createComponents(ComponentManagerImpl.java:123)
    at com.intellij.openapi.application.impl.ApplicationImpl.access$801(ApplicationImpl.java:90)
    at com.intellij.openapi.application.impl.ApplicationImpl$12.run(ApplicationImpl.java:496)
    at com.intellij.openapi.progress.impl.CoreProgressManager$2.run(CoreProgressManager.java:142)
    at com.intellij.openapi.progress.impl.CoreProgressManager.a(CoreProgressManager.java:446)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:392)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
    at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:127)
    at com.intellij.openapi.application.impl.ApplicationImpl.createComponents(ApplicationImpl.java:505)
    at com.intellij.openapi.components.impl.ComponentManagerImpl.init(ComponentManagerImpl.java:107)
    at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:454)
    at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:446)
    at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:194)
    ... 16 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class kotlin.jvm.internal.Reflection
    at com.intellij.configurationStore.StateStorageManagerImpl.getStateStorage(StateStorageManagerImpl.kt:133)
    at com.intellij.configurationStore.ComponentStoreImpl.a(ComponentStoreImpl.kt:256)
    at com.intellij.configurationStore.ComponentStoreImpl.initComponent(ComponentStoreImpl.kt:90)
    at com.intellij.openapi.components.impl.PlatformComponentManagerImpl.initializeComponent(PlatformComponentManagerImpl.java:54)
    at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentConfigComponentAdapter.getComponentInstance(ComponentManagerImpl.java:516)
    ... 29 more

I am using Kotlin 1.0.0-beta-4584 in my plugin and I am trying to run version = 'IU-15.0.1' of IntelliJ. Any ideas of what is going on here?

Link to the plugin is https://github.com/Turbo87/intellij-emberjs/tree/cf727b509bce9e770491e95fde8718630e4dd52d