I've installed rkh's Ultimate 2015 Physics Mod, Jan Volenec's Texture Pack, and Lukilla's Unlock all bikes and tracks. - Thanks guys. When I try to play multiplayer the game says I need to revert to original files, I replaced my original DATA.MIX, but the same message came up. I presume this means I need to get rid of the new texture pack. Does anyone know for sure, before I go for a full second install/find a clean/stock motogp15.mix file (I forgot to back this up)?