You do not need an outdated script to solve this problem. Here is how modern professionals handle comp duplication:
Pirated After Effects scripts are a known vector for malware. Hackers embed keyloggers, crypto miners, or file-encrypting ransomware inside the script’s .jsx or .jsxbin files. Once you install it in ScriptUI Panels, your entire system is at risk. true comp duplicator after effects download free
If you’ve landed on this page, you are likely in the middle of a messy After Effects project. You have a pre-comp inside a pre-comp, inside another pre-comp, and you just realized you need a second version of it. You do not need an outdated script to solve this problem
You tried right-clicking and hitting "Duplicate," but when you changed the new version, the old one changed too. That’s when you googled "True Comp Duplicator After Effects download free" hoping for a miracle. Once you install it in ScriptUI Panels ,
Here is the long answer you need to read before you click any shady download links.