Ok, here is what I had to do. After poking around a bit, I wound up right clicking in the textures tab, selecting "save wad" and saved it as "default wad". I was then able to select this wad instead when right clicking on "textures" in the preset list. This did not reproduce the crash and seems to work fine, I just have to go and collect a bunch of textures to place in it. It seems my problem was in fact with the standard wad, included in the program, at least for me.