You'll need to contact support by email, and they'll help you out.

The issue that occurs here is that because of memory constraints, CC3+ cannot compute the entire high-resolution map in memory at the same time for the export, which is why it exports in multiple passes, each pass rendering a part of the map.

Unfortunately, effects from entities outside of the current rendering part won't be considered, such as shadows from entities far away. There is a certain overlap to handle the closer but right outside things, but considering effects from everything in the map is impossible due to the aforementioned resource problem.

However, you can change the default size of these render chunks, causing CC3+ to render much more of the map in one go. This is done by typing in EXPORTSETMPPP on the CC3+ command line and hitting enter. The command line will then ask for the number of pixles, type in the value 40000000 (The current value, shown in brackets is probably 4000000, keep your zeroes straight). and hit enter. Depending on your export resolution, you will export the map in much fewer passes, perhaps even just a single pass.

Note that if this isn't enough, the other solution is to either consider using shorter shadows, avoiding the problem, or manually creating them using a partially transparent polygon.

Well, there can never be enough tutorials, but it is described in the Manual, which is a tutorial for the program. I know some people prefer videos instead of written word (that still boggles my mind, really), but videos do take time and effort to make (and are also way more difficult to keep up to date compared to written text). I do make video tutorials, but it is difficult to get to everything.

Being druids, they have access to the control weather spell. Maybe they keep each of the four villages is like that year round? ;-)

The druids have now found their home in the atlas. Thanks Quenten.

Well, that's the problem then. Just move the COASTLINE sheet upwards to right between RIVERS and ROADS, which is where it is supposed to be.

What probably happened here is that the COASTLINE sheet was missing from the template you used, which caused CC3+ to automatically created it when it was needed for that outline. But CC3+ don't know where in the order to put such a automatically created sheet, so it just puts it on top of everything.

Edit: And a fast Lorelei sneaks in......

Am I understanding you right here that each sheet is one floor, so that all the floors are in the same map file?

In CC3+, because of things like sheets effects and such, maps tends to use a lot of sheets, so it is generally better to use one map per floor. Although it is possible to keep it as one map too, but then the macros hiding the sheets must be updated to hide the complete set of sheets. With some nice naming you can do this rather easily by taking advantage of the HIDESHTF and SHOWSHTF commands which hides and show sheets by a wildcard filter, so for example all sheets for floor 1 could be named FLOOR1_SOMETHING and so on.

The easiest way to use textures (fill styles) from another style is to first make a blank dummy map in the style containing those textures, then in your actual map, go to Draw -> Insert file and pick your dummy map and hit ok. Once you return to your map with the dummy map on your cursor ready to place, just hit escape immediately to stop placing it.

Ralf's uploaded a signed version now, that should take care of the warnings.

You're in for a lot of discovery yet :)