How to export sim animations

Hi. I'm trying to export some animations, but at the end it's just a blank file, what am I doing wrong? 1. I'm opening Sims 4 studio, animation -> override 2. Choosing the animation I want to override, saving the file, opening it, hitting export 3. Opening Blender 2.78 and opening an exported animation file
In blender, the timeline is completely empty and the rig is in T pose, there is no animation at the end.