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Can't open editor in MATLAB 2020a

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Dominic Diston
Dominic Diston on 5 Sep 2020
Commented: Dominic Diston on 7 Sep 2020
When I attempt to open a file in current directory, I get the following error message:
Error using edit (line 66)
Failed to open MATLAB Editor.
Caused by:
Unable to resolve the name matlab.desktop.
I have absolutely no idea what's going on. All answers to similar looking problems don't seem to apply.
BTW Using default matlab path. Also, there are no other versions of matlab on my computer.
Also, can't open files via Windows file manager although they are associated with MATLAB 2020a.


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Walter Roberson
Walter Roberson on 6 Sep 2020
That last bit is normal, and has to do with the way Live Script works.
Is it possible that some function you are adding the path to is interfering with MATLAB? For example there is a common third-party software package that defines isrow() and that causes problems.
Dominic Diston
Dominic Diston on 7 Sep 2020
Not that I'm aware of. I'll take a look but it might take a while.
Dominic Diston
Dominic Diston on 7 Sep 2020
Found it! In a package I was given, several levels down, there is a subpackage called +matlab. Remove this and the editor problem doesn't exist. This has been in place for years and hasn't caused any clashes up to and including 2018b. Obviously, 2020a initializes differently. Apologies for the panic ... the root cause was totally unexpected.

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