After Effects Error Asked To Create Unknown Property Of Type Fix

This error is almost always triggered by a mismatch between After Effects and external data. The specific causes include:

If you are building your own tools or using custom controllers, generic property naming conventions are likely breaking the project architecture.

A corrupt or unsupported script loading automatically during startup will cause continuous crashes. Isolate the problematic script with this method: Close Adobe After Effects completely. Navigate to your application's script directory: This error is almost always triggered by a

You can also clear user variations by emptying out the User Presets folder inside your local Documents/Adobe directory. 4. The Fresh Project Import Workaround

This error is almost never caused by a bug in After Effects itself. It is almost always caused by: Isolate the problematic script with this method: Close

A project created in CC 2024 might use an expression syntax that doesn't exist in CC 2023.

Prevention beats cure. Adopt these habits to never see "asked to create unknown property of type 'fix'" again. The Fresh Project Import Workaround This error is

Think of it as a translator error: A script is trying to tell After Effects to "Set the color of the 'magic-layer-101'," but if that layer doesn't exist, or the "color" property isn't applicable to that layer, After Effects returns this error. Common Causes for the "Unknown Property of Type" Error

This error is frequently linked to specific third-party tools like or custom Master Properties/Dropdown Controls .

, simply closing the extension panel and reopening it can reset the "boot" process and clear the error. Identification Tip