I've already searched and searched and none of the answers to this question have helped me. I have an animation of a character moving right, and I need to flip it so that he's moving left. I've tried copying and pasting flipped both in the action editor and the 3D view and neither works right. My bone names are all correct with .L and .R for left and right respectively.
Any help would be greatly appreciated.
Here's the .blend file.