Did that, renamed intro movie, put Win 98 compatibility mode on both the desktop shortcut (which I see is to launcher.exe -path .) and div.exe, just in case, was in game for about 1 min, then quit and rebooted... And saw a quarter of the welcome screen and desktop with fail-safe settings. Then rebooted twice more after restoring to normal as another check to make sure it doesn't happen on its own somehow now, and nope, was fine.
Wonder if the fact that I was able to play before this break and not run into this issue was due to the fact that I hadn't rebooted right after playing BD, so the potentially corrupted (or whatever) settings were restored somehow, maybe I had played another game in between. No idea and don't quite feel like testing now.
Never had anything like this reported before?
