It comes highly recommended by pretty public folks, like Matt Colville, I trust it pretty well. You have the Worldographer that's also called 'Hexographer 2', right? I don't know if there's another, but I also don't know why the EULA crashes for you. Mine doesn't do that.
EDIT: Also, Huh! that map design is pretty old and made through lots of games I've been in with it. I dunno, I didn't TRY to make it look like Eastern Kingdoms, that's honestly just a coincidence.