Thanks!
DanyPPC is testing too (real A1200/030) and isn't having such serious issues.
So, I suspect that all your problems are because of WHDLoad on your real hardware installation. DanyPPC was able to launch the game normally, not Load_whd file.
What I can do, is suggesting to add this on the game's icon/Information:
Also, variations, like NOMMU but removing the PRELOAD.
But, I'll keep working on it. This happened in the past: I kept trying newer versions of the engine that gave different results until settling on a new stable one. For now, the game version on the main page download will stay on the version of the engine that I consider stable for the game, recommending do use a normal DB9 Amiga joypad directly into the Amiga without any adapter until we can solve these new issues. Thanks again!