Matlab forgets userpath setting after crash

I have set a folder containing startup scripts to the userpath:

>> userpath(...path to my folder...)

It works just fine, until it doesn't. When sometimes Matlab crashes, the next time the userpath is empty and I have to set it again.

Can it be fixed?

[Walter Roberson]

Sometimes when MATLAB crashes, it corrupts something in prefdir()

Answer 1

[Star Strider]

‘Can it be fixed?’

Probably. Use a startup file. Create it and then put it in the main ...\Documents\MATLAB directory.

[Csaba]

Yes, well, I'd like to use a custom file path, and that's why I use `userpath`. But it is not stable.

[Star Strider]

I do something like this —

My_Dir = userpath;

My_Work_Dir = genpath(My_Dir);

addpath(My_Work_Dir, '-end');

It has changed slightly over time (mostly to reflect changes in MATLAB and how it does these operations in the last 25 years that I have been using it), however this approach has been remarkably stable. If I add a new directory in my MATLAB search path, I close MATLAB then re-start it. That automatically adds the new directory to my MATLAB search path, then and forever. (It has been so long since I have changed anything in my startup file that I have forgotten the details. It works, so further changes to it are unlikely unless MATLAB changes and my startup file needs to be changed to accommodate those changes. I believe I have only had to do that three times since I first wrote my startup file.)