Good work.

CHANGEC requires a color number (black is 0), so unless you have defined a variable called BLACK and set it to 0, that's why it fails for you.

CC3+ doesn't install anything that even integrates with explorer, so I am really struggling with coming up with any case where this would be caused by CC3+. Certain 3rd party programs that changes explorer behavior, like Sue mentioned, can certainly cause this behavior, but there are no components installed by CC3+ that explorer would refer to, so when CC3+ isn't running, it is like it doesn't even exist as far as explorer is concerned.

The only "integration" that exists is the file type mapping that causes explorer to recognize the .fcw file type, displaying the right icon, and allowing CC3+ to start when you double click the file. But that is core explorer functionality, and all CC3+ really does is tell it where the executable is by giving it a text string, it isn't an actual add-on to explorer itself, and CC3+ does it exactly the same way as any other program.

When it comes to Windows 11 and Lenovo Legion Pro, I have that combination myself (A Lenovo Legion Pro 5i [2023]), and CC3+ works perfectly fine on it.

When you did your clean reinstalls of Windows, did you install anything else before CC3+, like a custom virus checker or something? (I have to admit, that 6 month trial of whatever Lenovo shipped with my machine went out the window almost immediately, I prefer Microsofts own, and I certainly don't want something I have to start paying on in a few months). Most antivirus software works absolutely fine with CC3+, but I am just trying to find some commonalities that could be a probable cause.

Since what you are looking for are essentially just simple markers, if you don't find what you are looking for elsewhere, you can easily just draw them yourself and define them as a symbol. See page 75 of the user manaul that shows step by step how to make a basic symbol marker like this (Or page 105 of the latest published version of the Tome, if you have that)

Is that red polygon in the middle a separate polygon you can manipulate? Could it have been there from before you assembled the multipoly, perhaps as a copy of the blue entity?

Multipolies take on the properties of the current settings when created, not the properties of it's member, so that the multipoly itself became an outline could just be that fill style was set to hollow when you issued the command.

But, if that central red section is part of the multipoly itself, it is something I haven't quite seen before. If that is the case, can you post the .fcw file so we can take a look at it?

The scale in CC3+ is important, as mapping to scale is what allows you to do things like import a drawing like you have here and scale it accurately.

I recommend having a read of this blog article which talks a lot about the importance of scale:

It seems to delete just fine for me without effecting the landmass, so just to clarify:

• When you click to select it, you do click somewhere on that stray part out in the sea right, and not where it overlaps with the landmass? (As that would cause them both to be selected)
• After clicking on it to delete it, but before hitting 'Do It', do the command line reads as 1 entity selected and not 2?

As an addendum, after deleting it, if you want that outline, you can easily add back a correct version by using the change like draw tool command.

But if you are going for a very complex coastline, you may wish to use a glow effect instead of a outline anyway.

Unless you use Point Light shadows, no, you can't really block shadows. Sheets are rendered one by one individually.

Technically, since your shadow from the wall is shorter than the shadow from the statue, you are kind of saying that the wall is lower than the statue, so the shadow should technically pass it anyway. These are one of the problems with using wall shadows indoors. They give a nice visual, but they are pretty unrealistic, since most rooms are lit from within, so the walls never cast shadows into the room. Sometimes, replacing the shadows with glows looks better, but that doesn't change anything regarding the statue.

The ways to handle the statue would be to either make the shadow shorter, or use something to overlap it, for example by creating a copy of that floor on a sheet that is after the symbols in the drawing order. That works fine, but can lead to a rather complex sheet setup if you need to handle many shadows like that. And of course, the last option is to increase the length of the shadow of the wall.

Notice that if a fill is NOT scaled, your map is likely to not look as good when exporting to an image as it looks in CC3+, because the fills doesn't have a fixed scale, so they won't be the same size in the export as in the on-screen view (Typically, they will be smaller and thus tile more).

Also, if you don't set it as scaled, it won't stay the same size as you zoom in/out of the map while working either.

I don't think TRACED can handle that image. Too much details beyond the landmass itself, like that border, all the text, all those tiny islands, city symbols extending beyond the coastline.

You'll probably have an easier time just tracing it visually (manually) using the landmass drawing tool.

When you are exporting for VTT use and plan to use grids, make sure to always export using the rectangular section option. For example, if you look at your screenshot above, you'll notice that you have a border outside your map that is part of your image.

CC3+ isn't a "grid mapper", so export sizes are for the entire drawing, not just the gridded areas, so when you export the image in a size of 2000x2000, that border is going to eat part of that size, not leaving a full 100px for each grid square. But if you use rectangular section when you export and make sure to only export the map itself (use snaps on when defining the area to ensure precision) you should get the right size.

It is also important to set the export size correct in both dimensions.