Thanks for your crash report. I don’t think it’s specific to v0.92 so it should be safe to still update to anyone that hasn’t. This crash seems to happen when attempting to use the Buildings generator on a landscape for which a 2D map isn’t currently processed. I’ll need to safety this up so the interface warns you about this and doesn’t allow you to use the Generator in this way. Intended workflow is: download data, process map, use generator on this location, change location tile, (back to download data, etc). Remember that you can generate more than one terrain at once by increasing Area size at start of project.