This comprehensive troubleshooting guide breaks down the core technical causes behind this error and provides actionable, step-by-step solutions to repair your project files. What Causes the "Unknown Property of Type" Error?
: C:\Program Files\Adobe\Adobe After Effects (version)\Support Files\Scripts\ScriptUI Panels .
If it is configured to modern JavaScript, switch it to (or vice versa) and hit OK.
Switch the dropdown menu from "JavaScript" to Legacy ExtendScript . Click OK and restart After Effects. 4. Create a Clean Master Project Import If it is configured to modern JavaScript, switch
[New Clean Project File] ──> [File > Import > File] ──> [Select Broken Project] asked to create unknown property of type - Adobe Community
This typically happens in one of three scenarios:
This error usually prevents the action from completing and may sometimes cause the application to become unstable or crash. try the following solutions:
To avoid encountering this error in the future, make sure to:
To fix the problem effectively, it's crucial to understand its root cause. Based on user reports and community discussions, this error usually stems from one of the following issues.
Don't worry; we've got you covered. Here are some solutions to fix the "After Effects error asked to create unknown property of type" error: If it is configured to modern JavaScript, switch
This is a . It typically occurs in three scenarios:
To resolve this error, try the following solutions: