Well here's the Custom CSS Fix for PAL:

Custom CSS Fix [ported by Deathwolf]
04698500 C2000000
04695468 40820030
04695490 2C030000
046816B4 60000000

and here is

Alloys Don't Crash & My Music doesn't Crash [ported by Deathwolf]
0640AA80 0000000E
04030FD9 2C0B2D11
32001F1B 211B0000
60000003 00000000
4A000000 9017F444
38000000 00FF1100
10000000 00000010
38000001 00FF1200
10000000 00000010
38000001 00FF1E00
10000000 0000001D
38000001 00FF2000
10000000 0000001F
38000001 00FF2200
10000000 00000021
38000001 00FF2E00
10000000 0000000A
38000001 00FF2F00
10000000 0000000E
38000001 00FF3000
10000000 00000000
38000001 00FF3100
10000000 00000006
E0000000 00000000
5A010000 000002AC
62000000 00000000
E0000000 80008000

(i'm not quite sure if this code work)

However, the only way to play as the alloys, is by using a character mofifier code.

when playing all-star mode (unmodified), you always start fighting at the Flat Zone 2 stage vs. Mr. Game & Watch, try to first check if you have any problems related to the stage or character