A budding mapmaker is at your service.

Didn't anyone respond? It would be good to move the question to the appropriate topic, "All questions about Mapmaking" /topic/5758/
Spark, what version of "Heroes" do you have? What is its source? How did it install, and does it work normally? A pirated copy might be damaged or infected with viruses (although my own pirated copies of "Breath of Death" and "Complete Collection" work perfectly). Does this problem only occur with one map (is this a new map that you are creating?) or with any map you open? If you open a standard map, what happens?
It would be helpful if experts could chime in here. I can only suggest: either the game is corrupted (perhaps just the editor itself), or the map is. But the list of artifacts should not be empty in any case. And the English text suggests that WoG has been installed on top of the game, but incorrectly or incompletely. Perhaps you installed WoG on top of RoE or AB – but it should only be installed on top of SoD or "Complete Collection"! Otherwise, it won't work!

What is the difference between the version for "Armageddon's Blade" and the version for "Armageddon"?

I didn't understand the question. "Armageddon's Blade" is one version, more precisely, the first add-on to "Return of Erathia." The differences in the editors correspond to the differences in the game versions. For example, composite artifacts appeared in SoD...