The credits of this information are from the user @set. I just did the step by step and the video explaining the procedure.
The new stabilizer of vegas Pro 16 is still under development and correction. It's still not as good as the old Vegas Stabilize (at least not for me). If you want to get back the old Vegas Stabilize in Vegas Pro 16 follow these steps.
2.Go to Options / Preferences / Internal
3.Search for "Expose Legacy Stabilize"
4.In Value Write "TRUE"
Is there any way you can make Vegasaur Batch Stabilize recognize again the old Vegas Stabilize in Vegas Pro 16?
The current version of Vegasaur only recognizes the new Vegas video Stabilization.