Make sure to only use it on maps/templates though, and not on symbol catalogs, since a symbol catalog by it's very nature is a collection of symbol definitions that aren't being used anywhere.

Because of the way Windows works, this isn't doing what you want. Since Windows Vista, Windows have been using UAC to protect the contents of the program files folders from modifications. Programs shouldn't be writing to these areas. However, the FR Atlas is an old product from before that era. So to ensure compatibility for legacy software, Microsoft redirects the writes to files in here to the virtual store instead of blocking them (Which could have caused severe problems for an older program not understanding before being blocked). The file looks overwritten from the program that did it, thank to the virtual store, but thee file is NOT being overwritten, and other tools may still see the original file.

The Necro flags disappears after a couple of replies.

It is meant as a warning, basically saying "Someone has revived an old thread. Pay attention to what you are replying to, as the original poster may not even visit the forum anymore. Also note that any technical information in this thread may be outdated".

I've seen more than once people starting commenting on a many year old map where the poster haven't been here for years, or people trying to help someone who asked a question years ago.

It's nothing wrong with replying to a necro thread, it's just a marker informing you to keep in mind that it is an old thread being resurrected.

This is the SS4 toolbar. SS4 did come with it's own toolbars because at the time it was released, Dungeon tools wasn't part of the core package, so SS4 had to get it's own for users who didn't own DD3. What Ralf was using was the standard dungeon toolbar.

This is simply SS4 not having symbols for all the categories. Not all styles do. If you try with another style, for example the DD3 Color style, then the buttons will load these just fine.

I think you are misunderstanding how this works. That dialog doesn't configure what the buttons do, that dialog is used to get an overview of your available symbol catalog settings. The geomorph button will always use the geomorph filter (Unless you edit the actual menu file and change what the button do). What you see currently in this dialog is that you don't have any symbol catalog settings matching the two filters (Geomorphs* + SS4 Color). To get the Geomorph button to do something (with the current style), you need to make a new symbol catalog setting that is named SS4 Color Geomorphs something something. Once you have a symbol catalog setting with the appropriate name available, the button will load it. And that Symbol catalog file field is critical, because that's the symbol catalog that setting will actually load. If you create a new setting without pointing it to a file, it will basically do nothing.

Sure. Don't let us discourage you from having fun. I always enjoy seing what people come up with in the dungeon realm.

But it do get a bit easier to figure out how you are going to dress your dungeon if you decide on a somewhat logical purpose for it, it really helps the thought process.