I've released Stacks v1.0a17 with many compatibility fixes, with a focus on working through problems in the fascinating "HyperCard 10th Anniversary" stack from the Internet Archive.

What an amazing time capsule of Apple's history this thing is. Card 2 says that among others, the stack was presented to "Steve Jobs, Acting CEO" in late 1997. I can only imagine his enthusiasm!

It's also an absolute flex: animations, music, colors, speech, drag and drop. Not 100% working yet, but progress.