Imported Sculptris textures/bumpmap not fitting mesh properly (tiny patchwork effect) this is a problem regarding importing from Sculptris.

The model imported fine; but sometimes (seemingly at random), when I apply the texture/bumpmap it originally came with, instead of fitting over the model properly, it stretches hundreds of tiny versions of these textures across the mesh in a random patchwork.

I want to ask is there a setting I can select that will force the textures to adhere to their correct position?

1- This happened a few times when applying a texture on its own (but not other times, when it automatically fit it properly)
2- After successfully applying the texture, I simply added a second texture, defined it as a "Normal" in the mapping section- and while the "Normal" does appear, it does so as a tiny patchwork.
Thanks for the help everyone.

It seems I've found the problem boils down to uploading the texture incorrectly.