Exception in thread "AWT-EventQueue-0": java.lang.​NullPointe​rException

I restarted matlab and got this all in red in the command window.

Exception in thread "AWT-EventQueue-0": java.lang.NullPointerException

at com.mathworks.toolstrip.factory.TSToolSetContents$Dependency.access$1200(TSToolSetContents.java:758)

at com.mathworks.toolstrip.factory.TSToolSetContents.addDependents(TSToolSetContents.java:1229)

at com.mathworks.toolstrip.factory.TSToolSetContents.resolveDependencies(TSToolSetContents.java:1093)

at com.mathworks.toolstrip.factory.TSRegistry.addToolSetContents(TSRegistry.java:100)

at com.mathworks.mde.desk.ContributedToolsLoader$3$1.run(ContributedToolsLoader.java:75)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)

at java.awt.EventQueue.access$500(EventQueue.java:97)

at java.awt.EventQueue$3.run(EventQueue.java:709)

at java.awt.EventQueue$3.run(EventQueue.java:703)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

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