OS: both of Windows 10, Ubuntu (64bit)
MATLAB: R2019a, R2019b
Webots: R2020a revision 1
World file: webots/projects/languages/matlab/worlds/e-puck_matlab.wbt
Problem: Can not run MATLAB example
[matlab] Could not find file allincludes.h.
[matlab] Error in loadlibrary
[matlab] Error in launcher (line 74)
[matlab] loadlibrary( ...
Both OS show the same message "loadlibrary". How can I fix it?
I had the same problem in Ubuntu 18.04.3. Webots 2020a-rev1 was installed with .deb file.
For me, WEBOTS_HOME = '/usr/local/webots/'
The problem is that all paths (in include files ...) are defined with matlab for webots directly in WEBOTS_HOME/lib. And in 2020a it seems that there is a new directory which is WEBOTS_HOME/lib/controller. So all paths are wrong.
The solution is this one:
cd /usr/local/webots/lib
sudo cp -r controller/matlab/ .
Hope this helps.
Goupil