当我在Windows 8.1上打开Matlab时，我不知道是什么让这个消息出现了：
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.mathworks.mde.cmdwin.XCmdWndView.getAfterPromptPoint(XCmdWndView.java:2473)
at com.mathworks.mde.cmdhist.AltHistory.getPromptLocation(AltHistory.java:1391)
at com.mathworks.mde.cmdhist.AltHistory.getPopupBounds(AltHistory.java:1407)
at com.mathworks.mde.cmdhist.AltHistory._showPopup(AltHistory.java:1371)
at com.mathworks.mde.cmdhist.AltHistory.access$5500(AltHistory.java:152)
at com.mathworks.mde.cmdhist.AltHistory$HistoryClientListener$1.run(AltHistory.java:1864)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(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)
Unable to parse command history line: d>
Unable to parse command history line: d>
Unable to parse command history line: d>
Unable to parse command history line: /command>
Unable to parse command history line: d>
Unable to parse command history line: >
Unable to parse command history line: >
我使用Matlab 2014a并且不知道它是否与Windows 8.1兼容。你有什么想法吗？