After Effects Error Asked To Create Unknown Property Of Type Fix May 2026

After Effects will often "repair" the property links during the import process.

Click "Yes" when asked if you want to delete the preferences file. Step 5: The "New Project" Import Trick

If you don't need the effect, delete the missing effect layer and resave the project. Step 3: Purge Memory and Disk Cache After Effects will often "repair" the property links

How to Fix the After Effects Error: "Asked to Create Unknown Property of Type"

The most frequent cause is trying to open a project file in an older version of After Effects than the one it was saved in. While After Effects is generally backwards compatible, it is not always forwards compatible. The Solution Ensure your Creative Cloud app is fully updated. Step 3: Purge Memory and Disk Cache How

Opening a project created in a newer version of After Effects. Missing plugins that were used in the original project. Corrupt preference files or cache data. Expression errors that reference non-existent effects. Step 1: Check for Version Compatibility

Install the required third-party software (e.g., Trapcode, Element 3D, or Sapphire). Opening a project created in a newer version

Corrupted preference files can cause internal database errors. Resetting them is a "factory reset" for your workspace and settings. Close After Effects.

If the project uses a plugin you don't have installed, After Effects might struggle to define the properties associated with that plugin. How to Fix