Callback error in Classification Learner

While attempting to follow the tutorial at https://www.mathworks.com/help/stats/train-logistic-regression-classifiers-in-classification-learner-app.html on my Macintosh (system 10.12.4) using Matlab R2016a. Clicking on the "New Session" icon, throws a series of errors beginning with:

Warning: Error occurred while executing the listener callback for
event NewSessionFromWorkspaceButtonClicked defined for class
mlearnapp.internal.ui.MainToolstripView:
Error using table/varfun>dfltErrHandler (line 274)
Applying the function 'iIsCategoricalByDefault to the variable
'Group' generated the following error:

Undefined function 'eq' for input arguments of type 'cell'.

Thank you.

[Walter Roberson]

I just tried in R2016a on El Capitan; New Session works fine for me.