Why do my MATLAB files appear corrupt on macOS High Sierra?

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Why do my MATLAB files appear corrupt on macOS High Sierra?

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 1 Feb 2021
Edited: MathWorks Support Team on 5 Feb 2021
Apple released macOS 10.13 High Sierra on September 25, 2017 and changed the way macOS reports Language & Region preferences to MATLAB. When you update to macOS High Sierra, we recommend you upgrade to MATLAB R2017b, which can be downloaded here.
If you cannot update MATLAB to R2017b, then please follow the instructions below to see if you are affected and how to resolve the issue.
1. Determine if the Language your Mac is set to. You can do this by opening the “Language & Region” preference pane in System Preferences. Your current Language is at the top of the list on the left.
2. Is your default language set to any of the following languages?
  • English
  • Chinese (Simplified)
  • Korean
  • Japanese
No: see the following Bug Report for a workaround: https://www.mathworks.com/support/bugreports/1621180.
Yes: you are experiencing an unknown issue. Please contact support .

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More Answers (3)

RAB on 28 Sep 2017
Does this affect the MCR / MCR based executables and libraries too?
If so:
  1. What would be the workaround?
  2. Can we expect updates/patches on the downloadable prior MCR releases?

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Sandor Toth
Sandor Toth on 27 Sep 2017
Same problem as last year with macOS 10.12. :/
Walter Roberson
Walter Roberson on 2 May 2019
Pierre, read the table that I posted a link to. The Apple OS dev cycle is decidedly not fixed.
Are people expecting that Mathworks will adjust its release schedule to have time to accomodate new MacOS releases, taking into account that Apple sometimes makes incompatible change in fairly late beta releases, and taking into account that Mathworks has trouble getting the attention of Apple deveopers to work through incompatibilities ? Apple only ever announces ahead of time that the new OS will be released in the "fall", which is any time before winter starts about December 21. Add another 6 weeks for time for Mathworks to have gotten Apple's attention and gotten them to release fixes, would require Mathworks to delay its fall release to early February -- a time that it would normally be beta testing its spring release. And people would still be complaining to Mathworks that Mathwork's earlier release did not support the new MacOS that hadn't even been released yet, the same way that people already complain that Mathworks' R20xxA release does not work with the MacOS released in fall of that year -- and the way that people complain that Mathworks releases from several years earlier do not work with MacOS versions released several years later.

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Mario Migliore
Mario Migliore on 23 Apr 2020
Thank you, this fixed the issue!


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