I could not open any start file and had to link it. for example when I linked Torque i linked all three Torque_rig, Torque_GEO, and Torque. I ended up hiding both Torque_rig, and Torque_GEO links. and selected Torque link in the outliner editor. then in the 3D viewer on the left top I clicked on Object/ Relations/ Make Library Override. Once i did this i was able to select the rig and open pose mode.
