error on startup - how do I fix this?

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joe
joe on 31 Jan 2013
Edited: Walter Roberson on 12 Feb 2016
hi everyone,
I have a problem on startup. After a fresh install of 2012b I was welcomed by the following message:
Cannot find function, getDefaultUserFolder, in library services.
Warning: MATLAB did not appear to successfully set the search path. To recover for this session of MATLAB, type "restoredefaultpath;matlabrc". To find out how to avoid this warning the next time you start MATLAB, type "docsearch problem path" after recovering for this session.
Warning: Duplicate directory name: C:\Program Files\MATLAB\R2012b\toolbox\local
Warning: Initializing Handle Graphics failed in matlabrc.
This indicates a potentially serious problem in your MATLAB setup,
which should be resolved as soon as possible. Error detected was:
MATLAB:undefinedVarOrClass
Undefined variable "graphics" or class "graphics.internal.initializeMATLABRoot".
Warning: Initializing Java preferences failed in matlabrc.
This indicates a potentially serious problem in your MATLAB setup,
which should be resolved as soon as possible. Error detected was:
MATLAB:UndefinedFunction
Undefined function 'usejava' for input arguments of type 'char'.
> In matlabrc at 110
Warning: Failed to add default profiler filters.
> In matlabrc at 163
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at com.mathworks.mlwidgets.graphics.ModelStateFactory.createNoSelectionModelState(ModelStateFactory.java:242)
at com.mathworks.mlwidgets.graphics.PlotToolSetFactory$3.parseComplete(PlotToolSetFactory.java:122)
at com.mathworks.mlwidgets.graphics.ModelStateFactory$ProductInfoListener$1$1.run(ModelStateFactory.java:1023)
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)
com.mathworks.jmi.MatlabException: Cannot find function, getDefaultUserFolder, in library services.
at com.mathworks.jmi.NativeMatlab.SendMatlabMessage(Native Method)
at com.mathworks.jmi.NativeMatlab.sendMatlabMessage(NativeMatlab.java:219)
at com.mathworks.jmi.MatlabLooper.sendMatlabMessage(MatlabLooper.java:120)
at com.mathworks.jmi.Matlab.mtFeval(Matlab.java:1540)
at com.mathworks.jmi.MatlabWorker.feval(MatlabWorker.java:197)
at com.mathworks.appmanagement.GetAppInstallDirectoryWorker.doOnMatlabThread(GetAppInstallDirectoryWorker.java:20)
at com.mathworks.appmanagement.GetAppInstallDirectoryWorker.doOnMatlabThread(GetAppInstallDirectoryWorker.java:7)
at com.mathworks.appmanagement.AbstractAppManagementMatlabWorker.runOnMatlabThread(AbstractAppManagementMatlabWorker.java:21)
at com.mathworks.jmi.MatlabWorker$2.run(MatlabWorker.java:79)
at com.mathworks.jmi.NativeMatlab.dispatchMTRequests(NativeMatlab.java:364)
How do I fix this? plz

Answers (2)

Andreas Goser
Andreas Goser on 31 Jan 2013
Sorry, that may be obvious, but still relevant:
To recover for this session of MATLAB, type "restoredefaultpath;matlabrc". To find out how to avoid this warning the next time you start MATLAB, type "docsearch problem path" after recovering for this session.

joe
joe on 31 Jan 2013
i type "restoredefaultpath;matlabrc". The following message is: Error using feature Cannot find function, getDefaultUserFolder, in library services.
Error in userpath (line 57) p = system_dependent('getuserworkfolder');
Error in restoredefaultpath (line 52) matlabpath([userpath, RESTOREDEFAULTPATH_result]);

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