This is SnowGulch v2.02.51, its the update from 1.00.32, Apply the PPF path to the "bitmaps.map" file to make it work. If it doesn't work, repath the file.
download the bloodgulch.map put into halo trial/maps folder. Copy and replace (DON"T FORGET TO BACK UP THE NORMAL BLOODGULCH MOD!!! before you put this bloodgulch in the folder)