Thanks so much!
With that information, I was able to simply take 'box_small_crate.TGA' and make a .jpg copy.
So I get past the loading screen this time, and just round the corner I see the small crate in all of it's blue splendour. :p I imagine it's not supposed to be completly blue coloured, but It'll do if it's just covering some batteries!
Thanks again!
-Dukem
-EDIT: Meh, kinda annoyed now. At pretty much all of the loading screens it crashes, needing a .jpg that it simply doesn't have.
Which means that I have to make one and then go back to the game. :p Oh well.