Cannot use Installed Global Optimization Toolbox

I have MATLAB 2018b, and am using the ga function and receive the following error:

''ga' requires Global Optimization Toolbox.'

However when I check the ver command I get that I have the toolbox enabled. So clearly I have the install on, and even using the function matlab.addons.isAddonEnabled('GD') returns 1. So I am not sure how to be able to use the installed toolbox.

Any help is appreciated!

Answer 1

[Star Strider]

Run these from a script or the Command Window:

restoredefaultpath 
rehash toolboxcache

If that fails, use the Contact Us link in the upper right corner of this page and ask for installation help.

[eeswar bhimanojula]

i am facing same problem so

[Walter Roberson]

you could get this if you do not have global optimization toolbox installed or if it is not licensed