Well, after querying this with Rip, and trying the latest builds of Animation Lab, it appears that we can either run AniLab - under XP - up to TC v19, or, using later versions of TC, under Win 8.xx.
I installed an earlier version of AniLab v5 on my XP machine and it runs with TC v16 to v19.
I did not try v20 but, using this earlier build crashes v21.
Later builds of Anilab only appear to run under Win 8.xx - 32-bit or 64-bit.
Either way, I can still use my XP PC for a few more years, or, until it keels over and dies!
You can design without engineering, but you cannot engineer without design.
Using Win 10 with Designer 2016/2017 and TurboCAD Pro. Plat. 2018/2019 + Lightworks (64-bit versions) + AnimationLab 5.2.
Windows 10 Pro 1903 (Build 18362.476) 64-bit