Hi Gckpotti
I did a little bit of experimentation and I think you have found a bug with “Library Overrides”.
I cannot get shape keys to fire when linking this way.
Although, it works correctly when using the “make Proxy” method.
One thing I can suggest is that you check you are making the proxy for the RIG and not the mesh. (That is probably why you can’t enter pose mode)
But I will continue to experiment and log a bug report if one hasn’t already been logged.
