Operating system: any and graphics card: any
Worked: all previous ones
Short description of error
As per the official docs:
When using the add-on Rigify, please note: Compatibility is broken for this release. There's no guarantee rigs created in previous Blender versions will work correctly. Rigs created in Blender 2.78 may not be compatible with 2.79. Rigs created in Blender 2.77 may still work. Save your work before attempting upgrading your rigs.
That's TOTALLY UNACCEPTABLE.
Exact steps for others to reproduce the error
Since I don't want to re-make ALL my meshes (NO. Really: NO).
I'll never install such a BUGGED version on my machine.
I'll stick on Blender 2.78c FOREVER.
Unfortunately, I won't get denoising.
But - you know what? - I strongly prefer my rigs!