I'm going through mtpeak2's tutorial on how to install the S-rig and have a slight problem. I placed one of the install bones and hid it as instructed. A couple of steps later, I wanted to move it just a bit more, unhid the bone per shift J and now have all bones visible.

Is there a way to get back to the default bones only showing? Right now it looks like I'll have to pick each and every bone to hide them again - hundreds of bones???

Delete the keys made for hiding and unhiding the bones. You should have all pose slider keys in the action, no bone keys. Don't use the shift J and J keys to hide bones, use the poses in the installation poses folder, just go back to it and turn it on/off.

Thanks, that did the trick.