Is the SMASH STACK installation compatible with PAL Wii's?

I.e. Wii's in Australia and Europe. The reason I ask is because my System Menu is 4.2 and the WiiBrew wiki page states that it "is an exploit from Comex that uses a flaw in the custom stages in Super Smash Bros. Brawl (NTSC)." Do I need to seek out a specific PAL version of the install file? Or try my luck with the updated Bannerbomb code? Thanks!

Smash Stack only works on the NTSC-U version of the game. Just use Bannerbomb. It is much easier and it works fine.