How can I prevent SimBiology from throwing a NullPointerExcpetion?

I am having problems with SimBiology (running under Matlab 2013a). The app loads fine, but wheneever I try to create or load a model it throws a NullPointerException. Here are two examples, the first from an attempt to load a model, the second to create one:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at com.mathworks.toolbox.simbio.desktop.action.LoadProjectAction.loadModel(LoadProjectAction.java:381) at com.mathworks.toolbox.simbio.desktop.action.LoadProjectAction.loadModel(LoadProjectAction.java:355) at com.mathworks.toolbox.simbio.desktop.action.LoadProjectAction.loadModels(LoadProjectAction.java:350) at com.mathworks.toolbox.simbio.desktop.action.LoadProjectAction.generalMATLABCallCompleted(LoadProjectAction.java:200) at com.mathworks.toolbox.simbio.desktop.runnable.GeneralHandlerRunnable.matlabEvent(GeneralHandlerRunnable.java:75) at com.mathworks.jmi.MatlabMCR$AWTReplyEvent.run(MatlabMCR.java:1675) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(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)

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at com.mathworks.toolbox.simbio.desktop.util.PreferenceFileUnitUtil.generalMATLABCallCompleted(PreferenceFileUnitUtil.java:50) at com.mathworks.toolbox.simbio.desktop.runnable.GeneralHandlerRunnable.matlabEvent(GeneralHandlerRunnable.java:77) at com.mathworks.jmi.MatlabMCR$AWTReplyEvent.run(MatlabMCR.java:1675) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(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)

Any thoughts?

Best,

Lindsay.

[Ingrid Tigges]

Can you please contact technical support regarding your issue?