Exception in JFormDesigner plugin (3.0 EA 9)

The above exception is thrown if the last row in a GridBagLayout is removed:

Error during dispatching of java.awt.event.MouseEvent[MOUSE_RELEASED,(36,31),button=1,modifiers=Button1,clickCount=1] on ###overrideRedirect###
java.lang.NullPointerException
at java.util.StringTokenizer.(Unknown Source) at java.util.StringTokenizer.]]>(Unknown Source)
at com.jformdesigner.sN.a(SourceFile:96)
at com.jformdesigner.yq.ad(SourceFile:174)
at com.jformdesigner.yq.b(SourceFile:308)
at com.jformdesigner.co.actionPerformed(SourceFile:1837)
at com.jformdesigner.Di.actionPerformed(SourceFile:54)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:9)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:44)
at com.intellij.ui.plaf.beg.BegMenuItemUI.a(BegMenuItemUI.java:23)
at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:164)
at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:5)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:145)
at com.intellij.ide.IdeEventQueue.a(IdeEventQueue.java:127)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:115)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)