What happened to errors

I use MATLAB in my 3rd year course. I use live scripts (mlx), as they are best for teaching. In v2024, the following code would output a clear error "Not enough input arguments." But, in v2025, I just get no error information. How do I turn error explanations back on?

%% A simple bugged code usage
function seq=RUNME(a,b)
seq(1)=a;
for i=2:b
    seq(i)=seq(i-1)/b;
end
end
RUNME(1)

[Dyuman Joshi]

Starting from R2025a, (local) functions can be defined anywhere in a script. They don't necessarily have to be at the end of the script code anymore.

See here - https://in.mathworks.com/help/matlab/matlab_prog/local-functions-in-scripts.html

"How do I turn error explanations back on?"

You will have to revert to an older version of MATLAB.

[Warren]

Well that's disappointing. Perhaps the next release will reinstate the feature, as it was extremely useful in the classroom.

Answer 1

[Star Strider]

It works correectly here (R2025b). I cannot find anything specifically in 'Settings' (or anything else) that controls this, even with a Web search.

%% A simple bugged code usage
function seq=RUNME(a,b)
    seq(1)=a;
    for i=2:b
        seq(i)=seq(i-1)/b;
    end
end
RUNME(1)

Not enough input arguments.

Error in solution>RUNME (line 4)
for i=2:b
^^^^^^^^^

Uninstalling and reinstalling could be an option, although if something is set in your 'preferences' file, that might not change anything.

It would likely be best to Contact Support.

.

[Warren]

It works properly if put into a script (.m file), it does not work if put into a live script (.mlx file).

[Star Strider]

Contact Support using the link I provided previously.

That may be intentional. I rarely use the Live Editor (.mlx files).

[Matt J]

I get the correct error message in both file types (.m and .mlx)

[Warren]

Thanks, will do.

[Star Strider]

My pleasure!

[Star Strider]

@Matt J -- Thank you! (I had this open when I posted my previous Comment, and didn't see your Comment until now.)

Answer 2

[Warren]

Fixes from IT arrived (and worked). In case anyone else has this problem...

• Go to Home → Environment → Settings
• Navigate to MATLAB → Editor/Debugger → Display
• Ensure Live Editor Default view is set to Output on the right.
• Make sure the view space is sufficiently wide to view outputs.