Tomb of Sammun-Mak: Can't Load From Floatsum Docks!

Last night I decided to play a bit of Tomb of Sammun Mak on my MacBook, and I had last saved my game in the Mole Woman's house in the First Act, after talking to the elves in Little Arctic Circle. When I loaded the game (Both through the "Load Game" and "Continue" options) all I got was a black screen with the cursor, the case notebook, my inventory, and Max Mode; I couldn't even click on any of them.

I decided to restart the game this morning, and saved my progress in Little Arctic Circle, before going into the Mole Woman's house. I tried playing it again just now, and I got the exact same problem. Can this glitch be fixed or avoided? I'd like to at least figure out the hieroglyphs on the Sphunx head.
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