services::​io::PrintF​ormat name specified

Hi,

after installing prerelease R2020b on Ubuntu 18, commnads like "ls" produce the error string

Caught "std::exception" Exception message is:

unknown services::io::PrintFormat name specified.

I browsed the known problems. No answer.

Any hint?

Best.

Answer 1

[Raunak Gupta]

Hi,

This is a known issue. In order to resolve the issue, you may remove the preferences folder "prefdir" and re-start MATLAB.

You can also refer to the following link to reset the preference folder:

https://www.mathworks.com/matlabcentral/answers/99625-how-do-i-regenerate-my-matlab-preferences

The steps are the same except you must do it for the R2020b folder.

Hope it helps!

[Flavio Sartoretto]

Ok. It works!

[Imoleayo Abel]

Experiencing the same problem with R2020b prerelease on macOS Catalina 10.15.6

This solution works but completely eliminates all inherited preferences which is undesirable; (albeit temporarily since I renamed instead of removed the previous preference folder with the hopes of restoring in the future when a more specific solution becomes available). It took time to configure MATLAB to my preferred look, feel, and behavior; and it has been nice that updates (and prereleases) correclty inherited these preferences except for this current prerelease. I really hope we get a more specific solution eventually.

Thanks for the workaround nonetheless.

[Imoleayo Abel]

I messaged MATLAB support and got a fix that avoids resetting my preferences entirely. Apparently the issue is due to the Numeric Format setting being corruped. To fix this, I only had to do the following:

>> s = settings; 
>> s.matlab.commandwindow.NumericFormat.PersonalValue = 'short';