AnimationPlayer Issues

After adding animations to Silhouanna, which used an entirely different pose, I decided to make sub-folders for each. Which caused Godot (3.1.2) to freeze while  loading! (in the Editor, I didn't test exporting).
At first I assumed it was due to the new animations (and files), removing them to no effect. Taking all of the files out of sub-folders was what worked. This is an unfortunate problem since it won't allow me to organize the files using sub-folders!