I've found lately that when I change computers and take my project with me, the TileEd editor loads fine and everything shows up, including all settings. But I cannot, for some reason I can't find, actually edit the existing maps with the brush.
I can manually select my placed tiles using the mouse cursor or in the Hierarchy.
It didn't use to happen, which is why I raise it. I've been moving my project around for ages without an issue, but in the last couple of weeks I've noticed it. I can change my workflow to minimize its impact, so it's not a big deal, but I'd like to be able to fix whatever it is I'm doing wrong.