Rigify help - No hand bones?

So, I’m new to Blender and was using the Human Metarig. Things were going smoothly, until I generated the rig and got no hand controls. I’d had a few missing bones before, but after I enabled Blender to auto run Python scripts, this was the only issue that persisted.

The only change I made to the original rig was adding an extra arm bone; could that be the problem?