Error in error log when running JSF bot tests

!ENTRY org.eclipse.osgi 4 0 2012-09-20 02:18:09.081
!MESSAGE Application error
!STACK 1
java.lang.ClassCastException: [Ljava.lang.String; cannot be cast to java.lang.String
	at org.jboss.tools.common.model.ui.dnd.ModelTransfer.javaToNative(ModelTransfer.java:38)
	at org.eclipse.swt.dnd.ClipboardProxy.getFunc(ClipboardProxy.java:138)
	at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8307)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1192)
	at org.eclipse.swt.internal.gtk.OS._gtk_clipboard_store(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_clipboard_store(OS.java:6338)
	at org.eclipse.swt.dnd.ClipboardProxy.dispose(ClipboardProxy.java:93)
	at org.eclipse.swt.dnd.ClipboardProxy$1.handleEvent(ClipboardProxy.java:52)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4192)
	at org.eclipse.swt.widgets.Display.release(Display.java:3225)
	at org.eclipse.swt.graphics.Device.dispose(Device.java:248)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:140)
	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.runApplication(UITestApplication.java:31)
	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.run(AbstractUITestApplication.java:114)
	at org.eclipse.tycho.surefire.osgibooter.UITestApplication.start(UITestApplication.java:37)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1414)