I have problem when I start the matlab

When I start the matlab, an error message comes out despite I did nothing yet.

here's the error message;

Execution of script pathdef as a function is not supported:

C:\Program Files\MATLAB\R2022b\toolbox\local\pathdef.m

Warning: MATLAB did not appear to successfully set the search path. To recover for this session of MATLAB, type "restoredefaultpath;matlabrc". To find out how to avoid this

warning the next time you start MATLAB, type "docsearch problem path" after recovering for this session.

Undefined function 'usejava' for input arguments of type 'char'.

Warning: MATLAB did not appear to successfully set the search path. To recover for this session of MATLAB, type "restoredefaultpath;matlabrc". To find out how to avoid this

warning the next time you start MATLAB, type "docsearch problem path" after recovering for this session.

Warning: Initializing Java preferences failed in matlabrc.

This indicates a potentially serious problem in your MATLAB setup, which should be resolved as soon as possible. Error detected was:

MATLAB:UndefinedFunction

Unrecognized function or variable 'initdesktoputils'.

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com.mathworks.mvm.exec.MvmExecutionException: internal.matlab.desktop.editor.breakpointsForAllFiles

at com.mathworks.mvm.exec.NativeFutureResult.nativeGet(Native Method)

at com.mathworks.mvm.exec.NativeFutureResult.get(NativeFutureResult.java:62)

at com.mathworks.mvm.exec.FutureResult.getInternal(FutureResult.java:413)

at com.mathworks.mvm.exec.FutureFevalResult.getInternal(FutureFevalResult.java:49)

at com.mathworks.mvm.exec.FutureResult.get(FutureResult.java:263)

at com.mathworks.mlservices.MatlabDebugServices$3.run(MatlabDebugServices.java:978)

at com.mathworks.mvm.exec.NativeFutureResult.callRunnable(NativeFutureResult.java:146)

at com.mathworks.mvm.exec.NativeFutureResult.done(NativeFutureResult.java:138)

Caused by: com.mathworks.mvm.exec.MvmRuntimeException: Unrecognized function or variable 'internal.matlab.desktop.editor.breakpointsForAllFiles'.

Unrecognized function or variable 'connector.internal.lifecycle.callConnectorStarted'.

Unrecognized function or variable 'fullfile'.

Error occurred during background graphics initialization: Undefined function 'fullfile' for input arguments of type 'char'.

Unrecognized function or variable 'matlab.internal.debugger.breakpoints.initBreakpointsStoreInstance'.

Unrecognized function or variable 'matlab.internal.codingui.warmupProgrammingAids'.

Unrecognized function or variable 'matlab.internal.addons.addToMessageCatalog'.

Unrecognized function or variable 'matlab.internal.addons.addToMessageCatalog'.

Unrecognized function or variable 'matlab.internal.addons.addToMessageCatalog'.

Unrecognized function or variable 'matlab.supportpackagemanagement.internal.getInstalledSupportPackagesInfo'.

Unrecognized function or variable 'matlab.internal.debugger.breakpoints.initBreakpointsStoreInstance'.

Unrecognized function or variable 'matlab.internal.debugger.breakpoints.initBreakpointsStoreInstance'.

Unrecognized function or variable 'matlab.internal.codingui.warmupProgrammingAids'.

Unrecognized function or variable 'matlab.internal.codingui.warmupProgrammingAids'.

Unrecognized function or variable 'matlab.internal.debugger.breakpoints.initBreakpointsStoreInstance'.

Unrecognized function or variable 'pwd'.

Unrecognized function or variable 'matlab.internal.codingui.warmupProgrammingAids'.

Unable to resolve the name 'matlab.internal.doc.updateConnectorDocroot'.

Unable to resolve the name 'matlab.internal.doc.updateCustomDocContent'.

Unable to resolve the name 'matlab.internal.doc.search.configureSearchServer'.

I don't know what should I do. Restarting the program doesn't work.

[Jan]

The error message tells you to restore the default path:

restoredefaultpath;matlabrc

Maybe you need admin privileges to do so. Anyway, it is a good strategy to follow such advices given in the error messages.

Answer 1

[Sai Sumanth Korthiwada]

Hi Inguk,

I understand that you are facing an issue while launching MATLAB R2022b. To resolve this issue, please follow the troubleshooting steps mentioned below:

1. In MATLAB Command Window, execute the following commands:

>> restoredefaultpath
>> rehash toolboxcache
>> matlabrc
>> savepath

These commands will generate a new file "pathdef.m". Please relaunch the MATLAB application.

2. The issue can occur if you do not have 'write' permissions on the folder where MATLAB is installed.

For windows:

Please refer to the below mentioned link:

https://msdn.microsoft.com/en-us/library/bb727008.aspx

For Unix/Linux based operating system:

To resolve this issue, open terminal and run the appropriate command to recursively change the user's permissions on the MATLAB folder to read/write/execute:

sudo chmod -R 755 ./MATLAB

Hope this helps.