Alpaca
I've seen the black bar on lots of different ground types so not really sure what is causing that. I'll probably try and test that out on some bland (i.e. same value) heights and ground type maps at the weekend and see if I can track down the problem. Question though have you spotted either of these issues before? Particularly I'm curious on the black bar bit as I can certainly find them on the vanilla map - I guess I need to try out different graphic settings etc to try and check if its related to that also.

I mainly posted to see if anyone else had encountered the issue. (I never spotted the black bars on the vanilla map until I went looking for them!).