Hey all,
I have a small problem with my terrain cutters. I made one to my model, added it in Zero Editor and there also was a hole. But in game the terrain is still solid. I can see the hole but the hole is not a hole, it's just an invisible terrain area. I tested it with my and the terrain cutters that jaspo had uploaded. But both don't work.
Edit: Ah sorry. I had made a mistake on my model. It works now.

Just for the record, could you tell us what was your mistake, so that we can avoid commiting it and have a place here in GT to look at in case someone faces the same issue in the future?

I placed a few terraincutters and some of them worked. My problem was I placed it near a building that had a "ground" collision. So my terrain was solid but now I moved it a little bit and it works now. I followed the steps exactly hot to add them. I just forget the other building near my terrain hole.