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can't use the help docements about matlab2015a

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Hi, dear, I can't use doc help documents when I use the matlab 2015a on the win7 system, everytime when I use the doc command, the error will happen like this:
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: Could not initialize class com.mathworks.mlwidgets.help.ProductFilterModel$InstalledState
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: Could not initialize class com.mathworks.mlwidgets.help.ProductFilterModel$InstalledState
at com.mathworks.mlwidgets.help.DocCenterProductPrefs.getSelectedProductsFromPref(DocCenterProductPrefs.java:47)
at com.mathworks.mlwidgets.help.DocCenterProductPrefs.getProductFilterModel(DocCenterProductPrefs.java:33)
at com.mathworks.mlwidgets.help.DocCenterDocConfigParams.<init>(DocCenterDocConfigParams.java:37)
at com.mathworks.mlwidgets.help.DocCenterDocConfig.getLocalConfig(DocCenterDocConfig.java:77)
at com.mathworks.mlwidgets.help.DocCenterDocConfig.getInstance(DocCenterDocConfig.java:65)
at com.mathworks.mlwidgets.help.HelpPopup.createHelpPanel(HelpPopup.java:461)
at com.mathworks.mlwidgets.help.HelpPopup.createComponents(HelpPopup.java:451)
at com.mathworks.mlwidgets.help.HelpPopup.<init>(HelpPopup.java:447)
at com.mathworks.mlwidgets.help.HelpPopup.getInstance(HelpPopup.java:428)
at com.mathworks.mlwidgets.help.HelpPopup.closeIfShowingWithDifferentParent(HelpPopup.java:273)
at com.mathworks.mlwidgets.help.HelpPopup.showHelp(HelpPopup.java:386)
at com.mathworks.mlwidgets.help.HelpPopup.showHelp(HelpPopup.java:347)
at com.mathworks.mlwidgets.help.HelpPopup.showHelp(HelpPopup.java:210)
at com.mathworks.mde.editor.plugins.matlab.MatlabSelectionDelegate$2.run(MatlabSelectionDelegate.java:198)
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)
>>
How can I figure it out? please help me

Risposta accettata

Marc Jakobi
Marc Jakobi il 24 Ott 2016
It sounds like a currupt Matlab installation. I would suggest you reinstall Matlab and if the problem still persists, call the Mathworks support.
  2 Commenti
Ermin Gong
Ermin Gong il 24 Ott 2016
Yeah, I have reinstalled it, and the problem still there, I give it up, it spent much time till now, I have to! Still thank you very much
Marc Jakobi
Marc Jakobi il 24 Ott 2016
Try restoring Matlab's search path to the default. You may have duplicate functions that are shadowing Matlab's internal functions. If the problem still persists, you should be eligible for free telephone support.

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Più risposte (1)

Walter Roberson
Walter Roberson il 24 Ott 2016
  1 Commento
Ermin Gong
Ermin Gong il 24 Ott 2016
Yeah, thank you first, this page you attached i had seen, and following his step operation, however, it still doesn't work, what a pity!

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