Unable to lauch classification learner

When i tried to lauch classification learner, it poped out and crashed saying:

Warning: The following error was caught while executing 'mlearnapp.internal.MLearnApp' class destructor:

Dot indexing is not supported for variables of this type.

Error in mlearnapp.internal.MLearnApp/delete (line 110)

this.MainToolstripView.delete();

Error in mlearnapp.internal.MLearnApp (line 71)

function this = MLearnApp(session, dialogFactory, toolGroup, problemDependentToolstripFactory,

mainThreadBusyTracker)

Error in mlearnapp.internal.ui.DialogFactory/createMLearnAppWindow (line 32)

window = mlearnapp.internal.MLearnApp(session, dialogFactory, toolGroup,

problemDependentToolstripFactory, mainThreadBusyTracker);

Error in classificationLearner (line 27)

h = dialogFactory.createMLearnAppWindow(session, groupTag, appTitleMessage, problemDependentToolstripFactory,

mainThreadBusyTracker);

> In mlearnapp.internal.MLearnApp (line 71)

In mlearnapp.internal.ui.DialogFactory/createMLearnAppWindow (line 32)

In classificationLearner (line 27)

Error using toolpack.component.TSTearOffPopup

Attempt to execute SCRIPT TSTearOffPopup as a function:

C:\Program Files\MATLAB\R2018b\toolbox\shared\controllib\general\+toolpack\+component\TSTearOffPopup.m

Error in mlearnapp.internal.ui.transformation.ManualFeatureSelectionOptionsView/createTearOff (line 103)

this.TearOff = toolpack.component.TSTearOffPopup(this.TearOffContentPanel);

Error in mlearnapp.internal.ui.transformation.ManualFeatureSelectionOptionsView (line 48)

this.createTearOff();

Error in mlearnapp.internal.model.ModelFactory/createManualFeatureSelectionOptionsPresenter (line 174)

view = mlearnapp.internal.ui.transformation.ManualFeatureSelectionOptionsView();

Error in mlearnapp.internal.ui.toolstrip.ToolstripFactory/createManualFSButtonPresenter (line 30)

manualFeatureSelectionOptionsPresenter =

modelFactory.createManualFeatureSelectionOptionsPresenter(session);

Error in mlearnapp.internal.ui.DialogFactory/createMainToolstripPresenter (line 48)

manualFSButtonPresenter = toolstripFactory.createManualFSButtonPresenter(session,

mainThreadBusyTracker, toolGroup);

Error in mlearnapp.internal.MLearnApp (line 82)

this.MainToolstripPresenter = this.DialogFactory.createMainToolstripPresenter( ...

Error in mlearnapp.internal.ui.DialogFactory/createMLearnAppWindow (line 32)

window = mlearnapp.internal.MLearnApp(session, dialogFactory, toolGroup,

problemDependentToolstripFactory, mainThreadBusyTracker);

Error in classificationLearner (line 27)

h = dialogFactory.createMLearnAppWindow(session, groupTag, appTitleMessage, problemDependentToolstripFactory,

mainThreadBusyTracker);

How could i fix this?

Answer 1

[Monika Phadnis]

The issue might be due to some missing files in MATLAB search path.

Try restoring MATLAB's default search path by executing the following commands in MATLAB command window :

>restoredefaultpath
>rehash toolboxcache

Hope this works.

[Zilong He]

No... It does not work. I have tried to re-install the machine learning app but it still fails while launching.