I suddenly cannot save m-files anymore. What can I do about that?

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Sascha
Sascha 2012-10-10
评论： Image Analyst 2024-5-24
When I create a new m-file and want to "save it as..." it does not change its name from "untitled" in the Editor and the little star telling i is unsaved does not disapear. Then again when I open and change an existing m-file I can save it as usual. I am using version 8.0.0.783 (R2012b).
Tanks for your help!!!
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Nikola
Nikola 2013-2-26
编辑：Nikola 2013-2-26
I have the exact same problem here. I'm using windows 8. Is the still no solution??
edit: I just restarted my pc like the support suggested and it actually worked :)
Image Analyst
Image Analyst 2013-2-26
Please run PSR.exe (Start>Search Programs and Files->psr, or whatever the equivalent way to find programs in in Windows 8) and record your session and upload to your favorite file sharing web site. Then tell us where you uploaded it. http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers That way we'll see exactly what you see in a series of screenshots.

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回答（9 个）

Azzi Abdelmalek
Azzi Abdelmalek 2012-10-10
copy your file content to text file(notepad for example), restart matlab, and save your file
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Walter Roberson
Walter Roberson 2018-10-15
NTFS permits 2^31-1 files per subdirectory. If you are exceeding that, you should be reorganizing.
FAT32 permits 65534 files per subdirectory. That might apply for something like a USB stick.
ParkourPolkaDots
ParkourPolkaDots 2019-3-28
I'm saving the files on my laptop computer and I don't even have that many files in the folder, less than 20 files. 10 images and 5 code snippets max.

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Image Analyst
Image Analyst 2012-10-10
What operating system are you using and where are you trying to save it? Windows 7 does not let you save in certain folders even though the save file dialog will let you browse there.
Does the dialog box just exit as if everything went perfectly normally, or does it give you any kind of error message? If there is no error message, it should have worked and changed the title bar name in the editor. If it doesn't behave that way, I'd call the Mathworks.
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Jan
Jan 2012-10-11
@Azzi: After dozens of years of experiences with computer users, I've learned that "suddenly" means: directly after a modification I do not tell here, because I either do not assume that it is important or I'm even not aware of it.

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Sascha
Sascha 2012-10-11
Hello and thanks for your answers so far. Image Analyst got it right. I am using Windows 7 Starter (on a netbook). There is no error dialogue, everything seems fine except the point, taht the m-file is not saved in the end.
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Image Analyst
Image Analyst 2012-10-11
Got the problem description right, but still no solution. It seems totally bizarre and unexplainable so you need to call tech support.

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Sean de Wolski
Sean de Wolski 2013-2-26
编辑：Sean de Wolski 2013-2-26
We have a few reports of this happening (including from me!) so please contact us so we can learn more about it.
One user resolved it by reintalling Windows.
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Jing Ci Neo
Jing Ci Neo 2021-4-18
编辑：Jing Ci Neo 2021-4-18
This just happened to me! There was no error message and I could go through the save process as per normal, but the script is not saved (remains as untitled).
MATLAB R2021b, MacOS Mojave, v10.14.6
(update) Actually, I cannot run any scripts at all
Image Analyst
Image Analyst 2021-4-18
@Jing Ci Neo, call tech support. Not being able to run any scripts at all is not normal. Tech support can start a screen sharing session with you and fix it. We can't do that.

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Elisa
Elisa 2013-12-4
I have the same problem.
I believe that the problem has been in the updating of jdk from 1.6 to 1.7 and the declaration of the environment variable MATLAB_JAVA...
check it anyway...
Bao Le
Bao Le 2019-12-5
first check your code are there any variables that are same with the function of matlab, if not copy it to a new file and save it
Mireia Torralba
Mireia Torralba 2020-3-16
Hi,
Today I had exactly the same problem.
Matlab release: 2019b
OS Windows.
Now it seems to work fine but just to keep issue stats updated.
Best.
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Image Analyst
Image Analyst 2020-3-20
Did you see my comment at the top about running PSR?
Attach the zip file it creates here with the paper clip icon so we can look at it.
OSCAR ARAGON
OSCAR ARAGON 2020-8-21
I
I changed the compatibility of the executable in the folder C: \ Program Files \ MATLAB \ R2019b \ bin \ matlab.exe to windows 8 and saved the .m files again

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Drashti Sahu
Drashti Sahu 2021-8-10
My Problem is :
Firstly i installed the MATLAB 2021 version in which when i save the file a pop-up box came which was telling file does not found.
I was thinking may be it is the problem of version so i uninstalled that and i download version 2019a in my pc but again i face the same issue .
can someone please help me .
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Songhe Zhao
Songhe Zhao 2021-8-16
I have the same problem with my 2019b version. I just have to close and restart the MATLAB, then it work ok. it happens time to time, don't know how to fix. it is northing to do with folder save permission, othewise how it work after matlab restart ?

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Pradnya
Pradnya 2024-5-24
Hii, I too face the same problem:
" save('allFileInfo')
Error using save
Unable to write file allFileInfo: permission denied."
Appreciate your feedback

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