There's a problem with the Classic Adventures installer that causes Au3 to crash. To fix this, these lines in the Select.txt:
STD;BG1Sounds;0;20;0111; STD;BG1Sounds;1;20;0111; STD;BG1Sounds;2;20;0111; STD;BG1Sounds;3;20;0111; MUC;BG1Sounds;Init;20;0111; MUC;BG1Sounds;4;20;0111; MUC;BG1Sounds;5;20;0000; STD;BG1Sounds;6;20;0000; STD;BG1Sounds;7;20;0000;
need to be changed to this:
STD;BG1Sounds;0;13;0111; STD;BG1Sounds;1;13;0111; STD;BG1Sounds;2;13;0111; STD;BG1Sounds;3;13;0111; MUC;BG1Sounds;Init;13;0111; MUC;BG1Sounds;4;13;0111; MUC;BG1Sounds;5;13;0000; STD;BG1Sounds;6;13;0000; STD;BG1Sounds;7;13;0000;