Hi!
Currently, support works correctly up to Unity 6.3.
Starting with Unity 6.4, some scripts are incompatible due to API changes.
The incompatible script functions are related to the Hierarchy UI and backups; therefore, most other features function normally in Unity 6.4.
Starting with Unity 6.5, errors caused by deprecated APIs are elevated to compile errors, preventing execution entirely.
Therefore, while Unity 6.4 is supported if you force it to run, you should consider the current AnyPortrait to be supported only up to Unity 6.3.
We will address compatibility issues with a future update.
Thank you.