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

In technical terms, After Effects is telling you that an expression, script, or effect property is trying to reference a feature or property that does not exist in the current context or version of After Effects.

If the project structure itself is corrupted and prevents you from even viewing your workspace, you can often bypass the broken property reference via importing: In technical terms, After Effects is telling you

: /Applications/Adobe After Effects (version)/Scripts/ScriptUI Panels . The "Isolation" Method : Close After Effects. This error typically arises from a disconnect between

This error typically arises from a disconnect between what a piece of code (expression or script) is asking for and what the After Effects project actually contains. Common scenarios include: In technical terms

The "After Effects error: asked to create unknown property of type" is a common but frustrating warning that typically indicates a mismatch between the software and the project's scripts, expressions, or plugins. This error often occurs when After Effects encounters a "pseudo-effect" or a custom property it doesn't recognize Common Causes Outdated Expressions