The Official Kirby's Return to Dreamland Project

[Garamonde]

Nope, .TGA is not a very supported format at all (for example you can't open .TGA textures in any image program: the same can be said for almost all modelling programs).
But since you said you used the same method as in my tutorial for exporting, you should already have .PNG textures so it's all good.
I'm in the process of writing up a new first post, so once you finish Magolor, hold off on ripping anything else until I get it done.