In How can other creatures cast last judgment? we discussed the "Celestial" spell component, which imposes a requirement: "[t]he caster must be an outsider with the good subtype to cast this spell" (Book of Exalted Deeds page 89, apparently).
Activating a scroll requires "no material components or focus". Does this negate the "Celestial" spell component?
The Use Magic Device skill allows you to ignore various requirements for activating magic items such as scrolls. In particular, a DC25 check lets you "emulate a race" when using a magic item. With a successful DC25 Use Magic Device check, can you emulate a good outsider race such as a hound archon? Does this allow you to activate a scroll of last judgment without having the outsider type and good subtype?