2D stage help

[Symbiote]

Can someone help, I can't get 2D to work I always do everything like the guide i found said, but I always fall through the stage. Do I need to use the existing collision on the stage and just build off that?

[Chuy]

Edit the collisions to match that of your stage you may also have to edit the spawn points and such

[Segtendo]

Brawlbox has a collision editor if you didn't know.
http://www.smashboards.com/showpost.php?p=9377139&postcount=2
And don't forget to save, save, save!