Why does my "startup.m" file not work?

I am having an issue where my "startup.m" file is not executing. I need it to set up the path for a particular script to run. I launch MATLAB and execute that script from a different program (so without "startup.m") I get the following error:

[Script/Function] is not found in the current folder or on the MATLAB path, but exists in: [Some other directory].

How can I ensure that my "startup.m" file will execute properly?

Answer 1

[MathWorks Support Team]

Is your "startup.m" file located at your userpath? If it is located somewhere else, you may not get the behavior that you are expecting.

To locate your "userpath", type:

>> userpath

To locate your "startup.m" file (if it is somewhere on your path), type:

>> which startup

The "userpath" is the standard location for the "startup.m" file. Here is the MATLAB Documentation page describing the use of a "startup.m" file:

https://www.mathworks.com/help/matlab/ref/startup.html