» Sat Feb 19, 2011 4:28 am
Archive Invalidation shouldn't matter if this is a brand-new item with brand-new textures; Archive Invalidation makes it so you can overwrite files in the original game BSAs easily. That doesn't matter if the file is brand-new and not a texture replacer or somesuch. That said, you should use it anyways, since it's real easy and doesn't cause any problems I've ever heard of.
If you've got Fallout Mod Manager (which you should anyways, since it's a rather useful utility with any modding setup), you can just hit the 'Toggle Archive Invalidation' button and it'll set everything up for you. Otherwise, you need to go browse in .inis and download a few other files, and that's just a bother if you could just use FOMM instead.
Since the item is bright white, it probably means the mod author never bothered to texture it in the first place. Missing textures show up bright purple in the F3 engine, so if it isn't bright purple you probably aren't missing any textures. Have you seen any screenshots of the way the mod is intended to work that display the item you're looking at, but show that it does have textures?
(someone correct me if I'm wrong - I haven't done any real modding with F3 in a year or more, and I just started a new playthrough of F3 in prep for New Vegas this week, so I'm a bit out of practice:/)