ConcurrentModificationException

Hello,

running my TestNG class IDEA reports the following exception in status bar with the red symbol:

java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:449)
at java.util.AbstractList$Itr.next(AbstractList.java:420)
at java.util.SubList$1.next(AbstractList.java:799)
at java.util.AbstractCollection.toArray(AbstractCollection.java:176)
at java.util.ArrayList.]]>(ArrayList.java:137)
at com.theoryinpractice.testng.TestNGConsoleView.getChunksSinceMark(TestNGConsoleView.java:78)
at com.theoryinpractice.testng.TestNGConsoleView.addTestResult(TestNGConsoleView.java:60)
at com.theoryinpractice.testng.model.TestNGRemoteListener.onTestSuccess(TestNGRemoteListener.java:42)
at com.theoryinpractice.testng.model.IDEARemoteTestRunnerClient$5.run(IDEARemoteTestRunnerClient.java:81)
at com.intellij.openapi.application.impl.LaterInvocatorEx$1.run(LaterInvocatorEx.java:1)
at com.intellij.openapi.application.impl.LaterInvocatorEx$FlushQueue.run(LaterInvocatorEx.java:3)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:25)
at com.intellij.ide.IdeEventQueue.a(IdeEventQueue.java:128)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:62)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:14)


What could be the problem?

Thanks, Martin