Rescue old HyperStack

[slomacuser]

I have old HyperCard stack that wont open on classic Mac anymore, but If I upload it to the HyperCard emulator it can be opened.
Can somebody convert/repair for me the stack to be working again in classic Mac?

I got this error code when trying to open it.

Thanks!

 

[eric]

Sent claude after it (Since I don't know HyperCard internals)

What was wrong: the stack file was damaged partway through a save, so two of its internal tables are out of step with the cards.
- Block table (MAST): this is what HyperCard uses to find everything in the file. It still listed an older layout, and the card list plus 9 of the 24 index pages were missing from it. When HyperCard asked for the card list (block 329686) it got nothing back, which raises "Unexpected error 345441". I traced this to the check in HyperCard's CODE 36.
- Card index (PAGE blocks): 10 of the 24 index pages hold leftover disk data instead of card references, so 245 cards were unreachable.

 

[slomacuser]

Sent claude after it (Since I don't know HyperCard internals)

Wow it works now, thank you and to AI.

Amazing