As a wild guess, I'd say that some software installed in your system during startup is causing a conflict with Scorpion Engine. It'd be interesting to take a look at your startup-sequence file.
Anyway, I did another test build, now with a Scorpion Engine version from August 15, 2025 - today (link below). Earok outputs a new build of Scorpion Engine almost daily, and they tend to give different results too as things are tweaked and improved.
https://www.mediafire.com/file/u6bh35qjsu53apn/CastlevaniaAGA_WHDLoad.lha/file