[GMS2 2022.3]
I had a little problem with DialogueSystem_v121.yyz,
when I started the Demo an error ocurred after the first textbox, I could fix it by changing line 10 of Create Event of obj_camera from
[ [1,1, 9,2, 16,4], -1, [1,3]],
to
[ [1,1, 9,2, 16,4], [-1], [1,3]],
search [CTRL + SHIFT + F] for the word "Welcome" to find it.