he probably forgot to change folder name when converting it
also update the forks to be able to work as forks, change colPartBack1 and colPartBack2 to this mask and filter
collisionFilterGroup="0x20000" collisionFilterMask="0xfe3ffb83"
the material bucket's collisions are set to 0 btw so it falls through map. set to collisionFilterGroup="0x10004" collisionFilterMask="0xfe3ffb83"
