IdeaSpring - NPE

I get the following exception whenever I press in an XML or jsp file.

No message
java.lang.NullPointerException
at com.yanaware.intellij.ideaspring.utils.NavigatorImpl.isConfigFile(NavigatorImpl.java:436)
at
com.yanaware.intellij.ideaspring.action.GoToDeclarationAction.navigate(GoToDeclarationAction.java:71)
at
com.yanaware.intellij.ideaspring.action.GoToDeclarationAction.actionPerformed(GoToDeclarationAction.java:50)
at
com.intellij.openapi.keymap.impl.IdeMouseEventDispatcher.dispatchMouseEvent(IdeMouseEventDispatcher.java:17)
at com.intellij.ide.IdeEventQueue.a(IdeEventQueue.java:85)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:94)
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:149)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)