I'm in the progress of upgrading my project from Unity 4.6 to Unity 5.
The "Add Force" action is working but I've found that the "Add Torque" action no longer appears to do anything to rigid bodies. The Force Mode is set to "Velocity Change".
Using Playmaker 1.8 RC33 and this FMS was unchanged - works fine in 4.6 but doesn't in Unity 5.