Prepare your Project
Back up your project.
Animancer is no more likely than anything else to cause problems, but this is simply a good habit whenever you make significant changes to a project. Better yet, you should be using a proper version control system such as Git to track all changes.
Get Unity 2019.4 or newer.
Animancer has been tested in Unity
2021.1. Other versions newer than 2019 are likely to work fine, but have not been specifically tested.
Delete any previous version of Animancer.
This is mandatory since Unity's package importer system doesn't delete or rename existing files so any old scripts that aren't directly overwritten will cause compile errors that prevent anything from working. Check the Change Log to find out what has changed between versions.
Download Animancer Lite for FREE to try out all the Features in the Unity Editor:
If you want any of the Pro-Only Features, you can simply buy Animancer Pro and import it over the top of Animancer Lite so that anything you've made so far continues working seamlessly.
Please use the listed Contact methods if you have any questions, suggestions, or bugs to report. Reviews are appreciated, but they are not the appropriate place for such communications.