After Effects Error Asked To Create Unknown Property Of Type Fix ⭐

Sounds like you hit the After Effects error: "Asked to create unknown property of type 'Fix'" (or similar). That usually happens when a project references a plugin, effect, or expression that AE can't recognize. Steps to diagnose and fix:

: C:\Program Files\Adobe\Adobe After Effects (Version)\Support Files\Scripts\ScriptUI Panels

User reports have found that naming conflicts can trigger this error. In a thread about "Pseudo unknown property of type," the root cause was traced back to the word "Layer" being used in a pseudo-effect's naming, which conflicted with After Effects' internal naming structure. Changing the item names (e.g., from "Layer" to "Menu Type") resolved the issue. Review the names of custom controls, effects, or null objects in your project for potential conflicts. Sounds like you hit the After Effects error:

: If the project was created on another machine, ensure all third-party plugins used in that project are installed on your current system. Import into a New Project

Ensure your computer meets the minimum system requirements for After Effects. Also, make sure your graphics drivers are up to date, as outdated drivers can cause issues. In a thread about "Pseudo unknown property of

: Importing text elements from software like Adobe Illustrator can bring over conflicting layer structures or corrupt font registries. Step-by-Step Fixes for the Error

Check for conflicting control words. Avoid naming parameters generic system terms like , "Null" , or "Camera" . : If the project was created on another

If After Effects throws this warning globally on blank compositions, the issue stems from an active third-party background script. Close Adobe After Effects completely. Navigate to your system's script directory: