Enumeration error after 2023a update

I started getting the following error after I upgraded to 2023a:

Warning: Executing startup failed in matlabrc.

This indicates a potentially serious problem in your MATLAB setup, which should be resolved as soon as possible. Error detected was:

MATLAB:datatypes:InvalidEnumValueFor

Invalid enum value. Use one of these values: 'auto' | 'manual'.

I looked around but aside from the following, I couldn't find anything: Unexpected or internal error encountered in createMismatchError: Incorrect Enum error type - MATLAB Answers - MATLAB Central (mathworks.com)

Thank you in advance!

Answer 1

[Ogul Can Yurdakul]

Fixed it. In my startup.m file, I set all LineWidth values to 1 in a for loop as follows:

lineWidth_list_factory = fieldnames(get(groot,'factory'));

index_lineWidth = find(contains(lineWidth_list_factory,'LineWidth'));

for i = 1:length(index_lineWidth)

default_name = strrep(lineWidth_list_factory{index_lineWidth(i)},'factory','default');

set(groot, default_name, 1);

end

Apparently a new property called defaultAxesGridLineWidthMode is added to the relevant list, and its value is either 'manual' or 'auto'. I fixed the issue with a simple if statement:

lineWidth_list_factory = fieldnames(get(groot,'factory'));

index_lineWidth = find(contains(lineWidth_list_factory,'LineWidth'));

for i = 1:length(index_lineWidth)

default_name = strrep(lineWidth_list_factory{index_lineWidth(i)},'factory','default');

if ~contains(default_name,'Mode')

set(groot, default_name, 1);

end

end

And the problem is fixed.

[Adam Danz]

Alternatively, to avoid the defaultAxesGridLineWidthMode, you could use endsWith instead of contains.

index_lineWidth = find(endsWith(lineWidth_list_factory,'LineWidth'));

A full implementation of this solution was shared in this thread.