If you use a version of Blender past 2.68a, you're bound to have issues with Siba's BLB importer, there's a lot of faces on models that get flipped, and if textures, such as the brick textures, are involved, the UV coordinates might get messed up
And the stem is white and glowing because you didn't give it it's own texture like you did with the apple and the stem's material is set to 'shadeless'
Also, sorry that you got impatient, i've been a little busy with other things