Basically what the title says. I don't really know how to express the issue in clear terms, so here are some pictures.
Everything looks good while I'm editing the 2D Layout:
But when I actually apply it to the instrument, the containers and line all vanish:
I was having this issue with my main venue file, which was previously displaying containers correctly but stopped when I changed some of the instruments (we got an upgrade). I assumed I had screwed something up, but this is still happening in a brand new file on a fresh install of the latest version. Can someone tell me what I'm doing wrong? I'm being hounded for an up-to-date light plot and would really prefer to have one that isn't just a sea of floating numbers.