The game exited with this message as I was browsing my poetry library, just after I had finished Bittersweet:

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Adventure Game Studio
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An error has occurred. Please contact the game author for support, as this is likely to be a scripting error and not a bug in AGS.
(ACI version 3.21.1115)

in "GlobalScript.asc", line 13581

Error: Error running function 'repeatedly_execute_always':
Error: Null pointer referenced

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OK   
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