Corrupted TSM-1 walk cycle?

[luckbat]

This is a strange one. I've got a walk cycle of a TSM-1 rig that is somehow interfering with the normal operation of copy and paste.

 

See for yourself using the included .prj file:

 

If you load the project and open the "Walk cycle (corrupted)," you'll find that normal copy-paste functions don't seem to be working. For example, if you try to copy frame 0 and paste it into a new action using the same model, the arms collapse. If you try to do a paste-mirrored, the bones of the cloak receive mirrored keyframes, but they're not oriented properly.

 

I'm pretty sure it's the walk cycle itself that's causing the problem and not the model, but honestly I have no idea what's going on. All I know is, without copy & paste, I can't really work on this walk cycle anymore...

 

Does anyone have any ideas what's going on here?

CorruptedWalkCycle.prj

[ZachBG]

Sorry, but I have to ask the stupid question first:

 

You don't have Key Constraints on, do you?

[luckbat]

Originally "key constraints" was off, but later I turned it on to see if it would make a difference. There was none that I could see. But then, I'm pretty sure there are no constraints in that walk cycle, so it shouldn't've done anything.