After Effects Error Asked To Create Unknown Property Of Type Fix «iOS ULTIMATE»

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

Opening a project that uses effects from plugins you don't have installed (e.g., Boris FX BCC, Red Giant Universe). Pseudo-Effects & Presets:

: If you use tools like Motion 4 or Duik , right-click their panel title to "Close Panel," then reopen them via Window > Extensions .

If the project crashes immediately upon opening due to this error, use the : Launch Adobe After Effects with a fresh, empty composition. Move the scripts back , restarting After Effects

Move the scripts back , restarting After Effects each time, until the error reappears. This confirms which script is incompatible. Secondary Solutions

Often, this re-links the expressions properly and resolves the error. 3. Identify and Remove Third-Party Scripts/Plugins

"asked to create unknown property of type" in Adobe After Effects typically occurs when the software encounters a script, preset, or template that references a property or "pseudo-effect" it doesn't recognize or can't access. Common Causes & Fixes Missing Plugins or Presets in custom pseudo-effects or Master Properties

/Applications/Adobe After Effects (version)/Scripts/ScriptUI Panels Move all scripts out of this folder temporarily.

in custom pseudo-effects or Master Properties, as these can cause structural conflicts. Advanced Troubleshooting Isolate the Culprit:

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 Also, make sure your graphics drivers are up to date, as outdated drivers can cause issues. as outdated drivers can cause issues.

Run the built-in Adobe Expression Update Script to automatically convert legacy mathematical arguments into modern JavaScript engine structures. 3. Change the Expression Engine Type

Use the Creative Cloud Desktop App or designated third-party managers to repair plug-in installations.