ebryant wrote
Modifying the search path is not supported by MATLAB Compiler. Remove functions that modify the search path from your MATLAB code. To make files visible to your deployed application, add the parent folder to your MATLAB session.
Thank you for reporting the issue. I assume you are running the stand-alone version (and not as a Matlab toolbox correctly). This seems to be an issue with the compiled (stand-alone) version and should hopefully be fixed in the next release. For now you can download the external mesh generators manually and put in "%USERPROFILE%/Documents/MATLAB/.featool" (as I think you've done already).