You could try, sometimes, to lower the level of detail to the minimum and now I don't remember if speed to the bottom or to the top. Usually, those settings help me at those weird error that used to plague Sierra games
. That was one of the very few thing I had against Sierra games
. Also, going to a save game a bit earlier in the game and trying other things firsts? A lower success rate than the other tip, but sometimes the memory misstep (I suspect it is this) turns inoffensive.
My other favorite error was "Oops! You did something we didn't expected" and crash to DOS. It was specially fun when it happened once at the end of the animated sequence at the end of the trials of adulthood of the Simbani in Quest For Glory III
