Of course :)

But now I'm more or less happy with the grass, I think I will do some work on the actual mountain before I get into deserts and swamps and stuff - so you get a better idea of the scale of things.

LOL! Don't worry. That exact same thing had me too when I first started.

If you hide all but the MAP BORDER layer (layer, not sheet) there is a polygon (probably a decorative frame) on it.

The MAP BORDER layer is a very special layer that determines the extent of the map, controls the behaviour of many drawing tools, and also controls how grids are positioned. The layer should only have a set of 4 green lines, or a green rectangle on it (see below, where I have deleted the other entity to reveal it).

The grid you created was being positioned using the inside corners of that polygon as its origin. If you move that frame(?) to a different layer a new grid should work as expected.

I recommend re-freezing the MAP BORDER layer, once you are done, to prevent accidentally moving or deleting the green rectangle. Take care not to place anything else on it.

Ah, the darkened water is more contrasted because of the blend mode I used in the ocean contour sheets. I'll experiment a bit with that and see if I can get it to stop doing that.

Those earth tones are proto-desert fills. I think I need to work on those a bit.

I also use the mouse wheel a lot, even though it's actually slower than the zoom tools.

However, I was trying your map with the mouse wheel and still couldn't crash it.

I'm hoping that one of the others will try it and be able to reproduce the crash, but since it's New Year's Day it might be a while before anyone else tries.

You have to choose whether you want to group buildings according to where they are, or what they are. My preference is for where, rather than what, since it's easier to avoid putting things on top of one another if you have all the buildings in the block you are working on visible.

It's only a low res screen shot. Here's a closer look.

Sorry Don. I didn't even know that one.

@Traveller Nothing is set in concrete at this stage. I'm considering some kind of mountain ridge symbol as an addition to the bevel effect, so that people who want a bit more than just a bevel can have it. I'm going with dots and circles for structures, though. Anything more detailed than that would look terrible at this scale. Those kinds of things could be included in the regional version of the style, which I hope to do at some point.