After Effects Error Asked To Create Unknown Property: Of Type Fix //free\\

A buggy script in your "ScriptUI Panels" folder can cause this on startup.

: Ensure any third-party plugins (like Red Giant , Boris FX , or Video Copilot ) used in the project are actually installed . A buggy script in your "ScriptUI Panels" folder

Remember: every seasoned AE user has faced the "fix" error. It is a rite of passage. Fix it once, and you will never be slowed down by it again. A buggy script in your "ScriptUI Panels" folder