Maybe I spoke too soon. I loaded up the AGD remake of King's Quest I, walked to the second screen and saved the game. Then I tried to load the save and ags crashed and I got this error:
Code: AGS
An internal error has occurred. Please note down the following information.
If the problem persists, post the details on the AGS Technical Forum.
(ACI version 3.21.1115)
Error: read_gui: file is corrupt
AGS: ***** ENGINE HAS SHUTDOWN