Crashes when using Hole and then collapsing remains

[Ran13]

Although Wings shouldn't crash, the "Hole" command doesn't do what you're thinking it does.

Wings requires closed meshes. When you choose faces and call the "Hole" command, the faces no longer render in the viewport, nor export, but they ~still exist~, due to Wings' aforementioned need for closed meshes. (The reason it is like this is a long story that I won't bore you with at this time.)

In essence, when you collapse the (apparently, but not really) open edges to a vert, then try to collapse the vert, you are creating a malformed face... which should throw an error, not crash... but it's like the old joke...

"Doc, it hurts when I do that!"
"Well... don't do that!"