I thought the .spr32 format was re-skin-able like the .spr & .mdl formats with in Darkplaces? For instance I have made several fire images(torchflametop.spr32_0.tga, torchflametop.spr32_1.tga, etc.) to replace the ones with in the progs/torchflametop.spr32 from the dpmod, but they won't show on that sprite in the mod. If I take any one of the same textures and rename it to say ohh... a_rock4.mdl_0.tga it shows up in game on the 4 pack of rocket ammo just fine...
Ehh.. its late & I need to sleep, but if any one has any ideas please reply.. TIA