This is my first time rigging something in R15 and I rigged it as closely to the defaults as possible, only adjusting the joint positions. I even had all the collisions and tried changing the mass, but the torso kept staying in place. How do i fix this? I included the rig used here.
There were two Motor6Ds that were attached to the UpperTorso which I suppose caused it to stay in place. The default R15 rig attaches the HRP to the LowerTorso, I found that the HRP was attached to the UpperTorso. It should work now.