Multiple errors--Toolboxes missing/unable to get Add-Ons

Hello!

I am developing code for a psychophysics experiment and EEG data acquisition. In the lab, we are using shared desktop computers, so I don't have total control over the system. I was in here yesterday, working on the same code and it was running without error. It seems like this graphics toolbox would be a low level package that auto-installs, no?

1. MATLAB doesn't seem to be recognizing any of the previously installed packages/toolboxes and it's also erroring on a custom toolbox in my path (but that probably relies on hidden .m functions)
2. When I click "Get Add-Ons" to try reinstalling, I receive the error below
3. I've tried a basic plot function and get similar errors
4. I have re-booted and tried several different versions currently installed on this machine (I thought it might only be affecting one version)
5. I am currently considering uninstalling and re-installing, but that would likely affect many other users, and their respective experiments

Is there a way to manually install themissing toolboxes without calling up the pop-up window (my guess as to part of the problem)? Is something else going on that I'm not understanding?

Any help will be greatly appreciated.

Warning: Can't find the resource file 'toolbox/matlab/graphics/core/hg/hgrc.m' needed by 'C:\Program
Files\MATLAB\R2024b\bin\win64\hg.dll' 
> In matlab.internal.addons/WindowStateUtil/getDefaultPosition (line 82)
In matlab.internal.addons/WindowStateUtil/getPositionForExplorer (line 14)
In matlab.internal.addons/Explorer/createNewWindow (line 111)
In matlab.internal.addons/Explorer/show (line 61)
In matlab.internal.addons.launchers.showExplorer (line 183) 
Can't find the resource file 'toolbox/matlab/graphics/core/hg/hgrc.m' needed by 'C:\Program
Files\MATLAB\R2024b\bin\win64\hg.dll'

Error in matlab.internal.addons.WindowStateUtil/getDefaultPosition (line 82)
            screenSize = get(groot,'screensize');
                             ^^^^^
Error in matlab.internal.addons.WindowStateUtil/getPositionForExplorer (line 14)
                position = obj.getDefaultPosition;
                           ^^^^^^^^^^^^^^^^^^^^^^
Error in matlab.internal.addons.Explorer/createNewWindow (line 111)
                obj.addOnsWindowInstance = matlab.internal.addons.AddOnsWindow(obj.WINDOW_TITLE, clientType, obj.windowStateUtil.getPositionForExplorer);
                                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Error in matlab.internal.addons.Explorer/show (line 61)
                obj.createNewWindow;
                ^^^^^^^^^^^^^^^^^^^
Error in matlab.internal.addons.launchers.showExplorer (line 183)
            matlab.internal.addons.Explorer.getInstance.show(navigationData);

[Walter Roberson]

https://www.mathworks.com/matlabcentral/answers/872683-error-after-installing-matlab-2021a#answer_763457