Ok, I'm back now too. I've tried several scales. Most recently, I just tried gigantic scale. What I'm seeing is that there is actually nothing blocking the movement. The forces I'm applying are not in the proper direction. The forces are going in some wacky directions. I was able to move the huge block in any direction, just never the direction I intended, lol. SO it appears the problem is lying in vector rotate, or something similar. I also tried doing away with the "player" pointer, and just using me/my. Didn't seem to make a difference.

The giant scale I'm using now is a flat level block that's 4x4 in the largest grid squares in WED, and the cube I'm pushing around is approx 125x75 quants. But I've even tried tiny scale, and medium scale. So I really think the problem is that force is applied in the wrong direction, or maybe to wrong point of the cube. When I use torque to spin it around, I can move in all kinds of directions. Just never the right one, heheh.