I can't figure out why this model won't show all of the bones in pose mode. I think it has to do with the bone layers, but I don't know how to move them. Even with all of the layers selected, only some of the bones appear.
This image shows what pose mode looks like:
And this is what edit mode looks like:
No bones are hidden. Alt-H does nothing. The problem may also be related to bone groups.
Any help would be much appreciated.