After Effects Error Asked To Create Unknown Property Of Type Fix !!top!!

: /Applications/Adobe After Effects (Version)/Scripts/ScriptUI Panels

Cut and paste all files inside this directory into a temporary backup folder on your desktop.

After Effects will treat the old project as a folder asset, frequently bypassing the structural script loops that trigger the startup crash. Save this as a new file. 2. Re-Naming and Fixing Custom Pseudo Effects

Follow these troubleshooting steps in order to resolve the issue. 1. Identify the Broken Expression Before fixing it, you need to find it. Click OK on the error box. Identify the Broken Expression Before fixing it, you

This error typically brings your workflow to a screeching halt, preventing you from saving, rendering, or even closing the application without a force quit. Unlike a simple syntax error, the "fix" property error points to deeper corruption, plugin conflicts, or project file damage.

Change the Expressions Engine from JavaScript to . 2. Isolate and Rename Pseudo-Effects

If you can't find it, press EE on your keyboard to reveal all expressions in the composition. 2. The "Pre-compose" Solution Unlike a simple syntax error

: Modern versions of After Effects use a fast JavaScript engine, which can fail when reading mathematical or conditional data from legacy templates.

: Legacies variations in JavaScript. Templates built years ago use legacy ExtendScript syntax, while modern versions of After Effects use a standardized JavaScript architecture.

: Projects created in older versions of Adobe software that rely on deprecated JavaScript formats. preventing you from saving

Often, this error happens because a complex shape layer or text animator is struggling to render. Select the faulty layer.

Corrupted preferences can cause After Effects to misread script commands. Go to .

/Applications/Adobe After Effects (Your Version)/Scripts/ScriptUI Panels