[Eeglablist] EEGLAB - Simple Study - 'Plot ERPs' button grayed out? - v.2019.1

[Matsuno, Kevin]

Hi EEGLAB,

I created a simple study with 2 conditions and 4 subjects.

EEGLAB was then able to plot the ERPs, but the GUI shows 'Plot ERPs' greyed
out (see below). I would like to look at all the subjects. Can someone
point me in the right direction?

Do I need to get a previous version of EEGLAB?

Best
Kevin Matsuno