The multipleSet operation on node (or key), Multiple Keys, failed

I ve just installed matlab(r2012a) in ubuntu 12.04 32bit. When I am trying to imshow an image I got the following error:

   Error using Settings/set
   The multipleSet operation on node (or key), Multiple Keys, failed
   because you do not have write permission on level user of the
   Settings file.

   Error in migratePreferences (line 66)
   s.images.set('PreferencesMigrated',true,'user');

    Error in iptgetpref (line 25)
    migratePreferences();

    Error in imshow (line 211)
    initial_mag = iptgetpref('ImshowInitialMagnification');

     Error in sbu.BasePhoto/show (line 105)
            imshow(this.image);

Moreover, when Matlab starts it shows me the following:

 Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: com.mathworks.services.settings.SettingValidationException: IMsgIDException for "matlab.desktop.currentfolder.lastfolder.GroupColumn": The multipleSet operation on node (or key), Multiple Keys, failed because you do not have write permission on level user of the Settings file.
  at com.mathworks.mlwidgets.explorer.model.table.ExplorerTableConfigurationSerializer.saveGroupMode(ExplorerTableConfigurationSerializer.java:91)
  at com.mathworks.mlwidgets.explorer.model.table.ExplorerTableConfigurationSerializer.save(ExplorerTableConfigurationSerializer.java:65)
  at com.mathworks.widgets.grouptable.GroupingTableConfiguration$1.propertyChange(GroupingTableConfiguration.java:157)
  at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
  at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
  at com.mathworks.widgets.grouptable.GroupingTableConfiguration$4$1.run(GroupingTableConfiguration.java:995)
  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)
Caused by: com.mathworks.services.settings.SettingValidationException: IMsgIDException for "matlab.desktop.currentfolder.lastfolder.GroupColumn": The multipleSet operation on node (or key), Multiple Keys, failed because you do not have write permission on level user of the Settings file.
  at com.mathworks.services.settings.Setting.nativeSet(Native Method)
  at com.mathworks.services.settings.Setting.set(Setting.java:887)
  at com.mathworks.services.settings.Setting.set(Setting.java:745)
  at com.mathworks.services.settings.Setting.set(Setting.java:687)
  at com.mathworks.mlwidgets.explorer.model.table.ExplorerTableConfigurationSerializer.saveGroupMode(ExplorerTableConfigurationSerializer.java:88)
  ... 13 more
The desktop configuration was not saved successfully
>>

Any idea about this error?

[Divya Jyothi]

I have the same problem.