Both Blender 2.8 and UPBGE 2.5b instantly crash upon loading this pack. No warning, no 'oops failed to render,' just NOPE and ask if you want to re-open. I'm guessing this was made in one of the many versions between 2.9 and 4.0, so my old versions REALLY don't like it.

Could you please make this pack available as an FBX file? I think that would fix it