switchng folder to desktop in catalina 10.15

Tried to switch the folder to Desktop and got this:

Exception in thread "ContributedToolsLoader": java.lang.NoClassDefFoundError: Could not initialize class java.nio.file.FileSystems$DefaultFileSystemHolder

at java.nio.file.FileSystems.getDefault(FileSystems.java:176)

at java.io.File.toPath(File.java:2234)

at com.mathworks.resources_folder.ResourcesFolderUtils.getResourcesFolderName(ResourcesFolderUtils.java:31)

at com.mathworks.mde.desk.ContributedTools.constructToolSetFileName(ContributedTools.java:103)

at com.mathworks.mde.desk.ContributedTools.<init>(ContributedTools.java:65)

at com.mathworks.mde.desk.ContributedToolsLoader$3.run(ContributedToolsLoader.java:69)

at java.lang.Thread.run(Thread.java:748)

Exception in thread "Startup Class Loader": java.lang.NoClassDefFoundError: Could not initialize class com.mathworks.instutil.InstutilResourceKeys

at com.mathworks.mlwidgets.help.DocCenterRoot.initDocRelease(DocCenterRoot.java:44)

at com.mathworks.mlwidgets.help.DocCenterRoot.<clinit>(DocCenterRoot.java:26)

at com.mathworks.mlwidgets.help.HelpPrefs.<clinit>(HelpPrefs.java:49)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:264)

at com.mathworks.mlservices.MLHelpServices.getDocRoot(MLHelpServices.java:522)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getDocrootDirectory(ProductInfoUtils.java:698)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getAbsolutePath(ProductInfoUtils.java:685)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.parseFile(ProductInfoUtils.java:250)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.parseFiles(ProductInfoUtils.java:310)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.pathChanged(ProductInfoUtils.java:154)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.<init>(ProductInfoUtils.java:80)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getAllProductsInfo(ProductInfoUtils.java:887)

at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.<clinit>(ProductInfoUtils.java:66)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:264)

at com.mathworks.mde.desk.StartupClassLoader$LoadInfo.<init>(StartupClassLoader.java:112)

at com.mathworks.mde.desk.StartupClassLoader.createLoadInfos(StartupClassLoader.java:202)

at com.mathworks.mde.desk.StartupClassLoader.access$500(StartupClassLoader.java:25)

at com.mathworks.mde.desk.StartupClassLoader$2.run(StartupClassLoader.java:223)

at java.lang.Thread.run(Thread.java:748)

Exception in thread "initialSetupAfterConnector Thread": java.lang.NoClassDefFoundError: Could not initialize class java.nio.file.FileSystems$DefaultFileSystemHolder

at java.nio.file.FileSystems.getDefault(FileSystems.java:176)

at java.nio.file.Paths.get(Paths.java:138)

at com.mathworks.webservices.urlmanager.ReleaseEnvImpl.<clinit>(ReleaseEnvImpl.java:41)

at com.mathworks.webservices.urlmanager.UrlManagerImpl.<init>(UrlManagerImpl.java:39)

at com.mathworks.webservices.urlmanager.UrlManagerFactory.createUrlManager(UrlManagerFactory.java:13)

at com.mathworks.matlab_login.LoginWorkspace.getAuthenticationEndpoint(Unknown Source)

at com.mathworks.matlab_login.LoginWorkspace.access$000(Unknown Source)

at com.mathworks.matlab_login.LoginWorkspace$MyAbstractModule.configure(Unknown Source)

at com.google.inject.AbstractModule.configure(AbstractModule.java:62)

at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340)

at com.google.inject.spi.Elements.getElements(Elements.java:110)

at com.google.inject.util.Modules$OverrideModule.configure(Modules.java:177)

at com.google.inject.AbstractModule.configure(AbstractModule.java:62)

at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:340)

at com.google.inject.spi.Elements.getElements(Elements.java:110)

at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:138)

at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104)

at com.google.inject.Guice.createInjector(Guice.java:96)

at com.google.inject.Guice.createInjector(Guice.java:73)

at com.google.inject.Guice.createInjector(Guice.java:62)

at com.mathworks.matlab_login.LoginWorkspace.createInjector(Unknown Source)

at com.mathworks.matlab_login.LoginWorkspace.executeTask(Unknown Source)

at com.mathworks.matlab_login.MatlabLogin.checkUsersLoggedInState(Unknown Source)

at com.mathworks.matlab_login.MatlabLogin.isUserLoggedIn(Unknown Source)

at com.mathworks.matlab_login.MatlabLogin.isUserLoggedIn(Unknown Source)

at com.mathworks.matlab_login.MatlabLogin.isUserLoggedIn(Unknown Source)

at com.mathworks.mde.desk.LoginStatusIndicator.getLoginInfo(LoginStatusIndicator.java:445)

at com.mathworks.mde.desk.LoginStatusIndicator.access$000(LoginStatusIndicator.java:52)

at com.mathworks.mde.desk.LoginStatusIndicator$2.run(LoginStatusIndicator.java:162)

at java.lang.Thread.run(Thread.java:748)

Exception in thread "C4U RetrieveDataThread": java.lang.NoClassDefFoundError: Could not initialize class com.mathworks.webservices.urlmanager.ReleaseEnvImpl

at com.mathworks.webservices.urlmanager.UrlManagerImpl.<init>(UrlManagerImpl.java:39)

at com.mathworks.webservices.urlmanager.UrlManagerFactory.createUrlManager(UrlManagerFactory.java:13)

at com.mathworks.webintegration.checkforupdates.CheckForUpdatesDialogImpl$RetrieveDataThread.run(CheckForUpdatesDialogImpl.java:176)

Now Matlab doesn't work at all. How do I fix this?

[Javier Rubio-Herrero]

I have exactly the same issue. It happened when switvhing folders as well. Now I don't know how to fix it either.

[Ashlee Falls]

Hi! I'm the one who asked the question, but I kept looking and found this on YouTube and it worked perfectly. Hope this helps you too! https://www.youtube.com/watch?v=h7gEMcfeLB8

[Miray Yasar]

It works! I have trying to fix it for a week. But with this video it is done in just 5 sec!

Thanks alot.

[Selen Erman]

Thank you, this video helped me a lot !!

[Enas S.]

thank you very much it is works

[竞舸 何]

but the video shows how to fix it on macos. My system is windows. What should i do?

Answer 1

[Felix Huang]

I went to "security and privacy" and under "privacy" I selected "full disk access" and assigned that privilege to MATLAB. Strangely, my Apple News browser opened up when I re-opened MATLAB. Now it works. And now MATLAB is using my hard drive to bake apple pies I suppose.

[JB Siemwind]

I had the same problem. Thanks for the fix! You saved my day (night)!

[Clément BLANCHOZ--RHÔNE]

It works ! Thanks guy !

[Giuseppe Oriolo]

Thanks! And LOL for the apple pies.

[Shamil Patel]

that worked! thanks man

[Andy Hueni]

Brilliant! I could not even open Matlab in the desktop but had to start it via the command line to get this error:

java.lang.UnsatisfiedLinkError: /Applications/MATLAB_R2020a.app/bin/maci64/libnativelogin.dylib: dlopen(/Applications/MATLAB_R2020a.app/bin/maci64/libnativelogin.dylib, 1): no suitable image found.

After giving full permission to Matlab, this error miraculously disappears.

[peko wang]

thanks a lot !This problem has bothered me all afternoon!

[Elizaveta Bashmakova]

Thank you so much! It really works!

[Daniel Charlebois]

Thank you so much - this fixed it!

[Or Nachum]

Works perfectly, thank you so much!

[Joan Saldana]

Thank you very much Felix! I had the same problem (macOS Big Sur and MATLAB R2020b) and this fixed the problem.

[Carsten Daldrup]

Merci beaucoup! Just like Joan