Hi Walter @Walt Haas ,
The Simple_Blocks are now called Simple_Pillars and they are in the Env Folder. When you have Linked in Stomp, you need to make a Library Override of the rig:

Then you can go into Pose Mode.
Edit Mode is not available (I believe) with Linked models, unless you make them Local (like Appending, instead of Linking), but you don’t need Edit Mode for this.