Matlab gives "ContributedToolsLoader" error

4 次查看（过去 30 天）
Baran Ozvaris
Baran Ozvaris 2020-10-21
评论： Loic Daridon 2024-6-7
Whenever I try to open Matlab, it throws error as below. I just downloaded the app, and try to open a m file.
Also, I added screnshot as well.
PC is Macbook Pro Catalina version 10.15
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$3.run(ContributedToolsLoader.java:69)
at java.lang.Thread.run(Thread.java:748)
Exception in thread "Startup Class Loader": java.lang.NoClassDefFoundError: Could not initialize class com.mathworks.instutil.InstutilResourceKeys
at com.mathworks.mlwidgets.help.DocCenterRoot.initDocRelease(DocCenterRoot.java:44)
at com.mathworks.mlwidgets.help.DocCenterRoot.<clinit>(DocCenterRoot.java:26)
at com.mathworks.mlwidgets.help.HelpPrefs.<clinit>(HelpPrefs.java:57)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mathworks.mlservices.MLHelpServices.getDocRoot(MLHelpServices.java:522)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getDocrootDirectory(ProductInfoUtils.java:707)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getAbsolutePath(ProductInfoUtils.java:694)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.parseFile(ProductInfoUtils.java:259)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.parseFiles(ProductInfoUtils.java:319)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.pathChanged(ProductInfoUtils.java:154)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.<init>(ProductInfoUtils.java:80)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.getAllProductsInfo(ProductInfoUtils.java:900)
at com.mathworks.mlwidgets.util.productinfo.ProductInfoUtils.<clinit>(ProductInfoUtils.java:66)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.mathworks.mde.desk.StartupClassLoader$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)

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回答（2 个）

Prabhanjan Mentla
Prabhanjan Mentla 2020-10-28
Hi,
MATLAB is compatible with Catalina version 10.15 from release R2019b onwards. This link may help you to understand system requirements and this to resolve specific error.
Hope this helps.
Jonathan Weaver
Jonathan Weaver 2020-11-30
编辑：Jonathan Weaver 2020-11-30
I have the same error. It just started - I've been running 2020b for some time with no issue! Tried remove/reinstall but the issue is still there.
  3 个评论
显示 1更早的评论
Stanislas Dumas
Stanislas Dumas 2020-12-17
I got the exact same prblem starting today, still works fine on an old computer, was working fine today until it broke all of a sudden (I didn't update or change anything)
Loic Daridon
Loic Daridon 2024-6-7
I have the same pb since yesterday. matlab worked last week and know I have this error. I do not have made update of my IOS 13.66. any idea how to fix it I get matlab R2019b
thks

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