Freshly (re)installed MatLab R2023b error message upon startup

This is the issue i am facing when have reinstalled matlab with extra features like simulink

Warning: The following error was caught while executing 'internal.hotplug.EventSource' class destructor:

Dot indexing is not supported for variables of this type.

Error in internal.hotplug.EventSource/stop (line 84)

obj.Channel.close();

Error in internal.hotplug.EventSource/delete (line 67)

stop(obj);

Error in internal.hotplug.EventSource (line 37)

internal.hotplug.EventSource.lock();

Error in internal.deviceplugindetection.Manager (line 173)

obj.USBDetectorObject = internal.hotplug.EventSource();

Error in internal.deviceplugindetection.Manager.getInstance (line 246)

devicePluginManagerInstance = internal.deviceplugindetection.Manager();

> In internal.hotplug.EventSource (line 37)

In internal.deviceplugindetection.Manager (line 173)

In internal.deviceplugindetection.Manager.getInstance (line 246)

>>

Error using repmat

Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

Error in matlab.supportpackagemanagement.internal.getInstalledSupportPackagesInfo (line 15)

installedSupportPackages = repmat( ...

As well when i trying to open simulink it is also showing similar type of issue

Warning: Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

Error in setdiff>setdiffR2012a (line 189)

if ~strcmpi(class(a),class(b))

Error in setdiff (line 111)

[varargout{1:nlhs}] = setdiffR2012a(varargin{:});

Error in matlab.internal.lang.capability.Capability.Unsupported (line 74)

list = setdiff(capabilityArray, current);

Error in matlab.internal.lang.capability.Capability.require (line 85)

missingRequirements = matlab.internal.lang.capability.Capability.Unsupported(capabilityArray);

Error in matlab.internal.webwindow (line 161)

Capability.require(Capability.WebWindow);

Error in sltemplate.internal.DialogWebBrowser/createWindow

Error in sltemplate.internal.DialogWebBrowser

Error in sltemplate.internal.GalleryBrowserFactory.create

Error in sltemplate.internal.GalleryController

Error in sltemplate.ui.StartPage

Error in sltemplate.ui.StartPage

Error in sltemplate.ui.StartPage/instance

Error in sltemplate.ui.StartPage/getInstance

Error in sltemplate.ui.StartPage/doShow

Error in sltemplate.ui.StartPage.showCustomView

Error in sltemplate.ui.StartPage>@()sltemplate.ui.StartPage.showCustomView('Start',[],varargin{:})

Error in sltemplate.ui.StartPage/showWithFallback

Error in sltemplate.ui.StartPage.show

> In sltemplate.ui.StartPage.showWithFallback

In sltemplate.ui.StartPage.show

Warning: Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

> In Simulink.start_simulink

In slLibraryBrowser

In sltemplate.ui.StartPage.showWithFallback

In sltemplate.ui.StartPage.show

Warning: Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

> In slCustomizer/refresh

In slCustomizer.callRefresh

In slCustomizer>@()slCustomizer.callRefresh()

In slCustomizer.staticRefresh

In simulinkrc (line 40)

In Simulink.start_simulink

In slLibraryBrowser

In sltemplate.ui.StartPage.showWithFallback

In sltemplate.ui.StartPage.show

Warning: Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

> In slCustomizer/refresh

In slCustomizer.callRefresh

In slCustomizer>@()slCustomizer.callRefresh()

In slCustomizer.staticRefresh

In simulinkrc (line 40)

In Simulink.start_simulink

In slLibraryBrowser

In sltemplate.ui.StartPage.showWithFallback

In sltemplate.ui.StartPage.show

Warning: Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

> In slCustomizer/refresh

In slCustomizer.callRefresh

In slCustomizer>@()slCustomizer.callRefresh()

In slCustomizer.staticRefresh

In simulinkrc (line 40)

In Simulink.start_simulink

In slLibraryBrowser

In sltemplate.ui.StartPage.showWithFallback

In sltemplate.ui.StartPage.show

Warning: Execution of script class as a function is not supported:

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

> In slCustomizer/refresh

In slCustomizer.callRefresh

In slCustomizer>@()slCustomizer.callRefresh()

In slCustomizer.staticRefresh

In simulinkrc (line 40)

In Simulink.start_simulink

In slLibraryBrowser

In sltemplate.ui.StartPage.showWithFallback

In sltemplate.ui.StartPage.show

Caught unexpected exception of unknown type.

>>

so i kindly request to resolve my issue as soon as possible

Answer 1

[Steven Lord]

Rename this script file.

C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m

Its existence by that name prevents MATLAB from calling the class function that is part of MATLAB.

Answer 2

[Anjaneyulu Bairi]

Hi,

I understand that you are getting errors related to "internal.hotplug.EventSource'" while opening MATLAB.

• The error message has a warning which says "Warning: Execution of script class as a function is not supported:". Try to execute below command in command window of MATLAB and check the the path of the "class" function.

which class.m

• In error message it is showing that the class file is in OneDrive path, but it should be in datatypes folder. If the class file path doesn't contain datatypes folder then remove that file from above path and remove/rename this class file from your OneDrive path - "C:\Users\sbnda\OneDrive\Documents\MATLAB\class.m".

I hope this helps to resolve your query.

[Sapparapu B N D]

thank you now its running fine