error loading path

I get this message everytime i open matlab

Warning: C:\Program Files\MATLAB\R2011b\toolbox\local\pathdef.m not found.
Toolbox Path Cache is not being used. Type 'help toolbox_path_cache' for more info
Undefined function or variable 'ispc'.
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: Duplicate directory name: C:\Program Files\MATLAB\R2011b\toolbox\local.
Warning: Initializing Handle Graphics 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:undefinedVarOrClass
Undefined variable "graphics" or class "graphics.internal.initializeMATLABRoot".
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
Undefined function 'usejava' for input arguments of type 'char'.
> In matlabrc at 113 
Warning: Failed to add default profiler filters.
> In matlabrc at 161

How can i resolve this problem

Answer 1

[Gareth]

I've just put a clean install of 2011b onto a newly rebuilt Win7 machine and had the same problem. The issue appears to be that the pathdef.m file is absent, rather than corrupt or mis-located.

Having performed the "restoredefaultpath;matlabrc" fix mentioned above I then navigated to the C:\Program Files\MATLAB\R2011b\toolbox\local folder and typed "savepath pathdef.m". The system now appears to be working normally.

[Sam2012]

thanx that worked perfectly for me .. although cant figure waht the problem actually was

[Jason Atwood]

Same problem here. Solution worked +1. I'll just add to those reading this, the "restoredefaultpath;matlabrc" command might take a minute; keep an eye on the busy/ready signal from MATLAB.

[auir 57]

Worked like a charm :) Thanks

[Muhannad Al-Qaisi]

back from 2020 , worked +2. <3

[Yamane]

this is an answer that help ! thanks

[MB]

Thanks !!! It actually worked :)

[Andres Felipe Herrera Acero]

Buen día, alguien me podria ayudar con este error. No se que es Mecanografiar el archivo. Si me pueden ayudar con el paso a paso gracias.

[Hannes Qualo]

Cheers! Worked for me.

[Rafal]

Solution still works(2020b), thanks!

Answer 2

[Sanjay Manohar]

I found this was because of an user access control problem. The file MATLAB\toobox\local\pathdef.m was not accessible.

I had to go to "Program Files\MATLAB" in explorer, right click, properties, security, permissions, Add, Everyone, Allow full access.

This solved the problem.

[Anurag Khergade]

Thank you Sanjay

[John Taco Lopez]

it worked for me in 2017b, thanks

[Serge]

The accepted answer did not work for me, but this answer did!

So this did NOT work:

1) >> restoredefaultpath;matlabrc

2) cd C:\Program Files\MATLAB\<version>\toolbox\local\

3) >> savepath pathdef.m (and said ok on the Admin prompt that came up and it did write a pathdef.m file)

I also tried to do the same when running MatLab as administrator, but with no luck.

But this did work:

1) Navigate to C:\Program Files\MATLAB\<version>\toolbox\local\pathdef.m

2) right click > properties > security > Edit > Add > Type "Everyone" > Ok > Select Everyone > tick "Full Controll" > Ok

(Note you may need to create the file first, if missing, using the first 3 step)

Answer 3

[Jason Ross]

Did you do what it tells you to do in the message?

"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."

You basically need to get the path into a decent shape (using restoredefaultpath) and then figure out how it got there and fix it (using the doc reference provided)

[ouss ben]

Yes I did what's told to do in this message.

It repairs the problem temporarily, but once I start for a second time I have the same problem.

Can I create or download a pathdef.m file?

[Image Analyst]

Search all your m-files (I assume you know how to do that in a variety of ways) for "savepath" and see if it's there. Perhaps you're messing up the path and then saving some bad path.

Answer 4

[GAB_image]

Hello,

I'm using Mac Catalina OS for running Matlab 2019b and I'm getting the following error-warning message when initiating the session:

Warning: Initializing 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:format:UnknownOption

Invalid format option sh.

> In matlabrc (line 52)

I have tryied "restoredefaultpath;matlabrc" but did not work ... and "savepath" as well but also did not work...

Matlab 2019b works and open session in the correct path folder but the warning - error does not disappear

How could I solve this problem ?

Thanks a lot