jsx script on Illustrator 2021 throws File not found error when loading ExternalObject

[Anurag Mendhekar]

We're trying to run the following function in Illustrator 2021 (25.2) on a Big Sur Mac OS machine. The indicated line fails with and error "File or Folder not found" (or equivalent there of). The line in question is trying to load a framework as an external object. The framework exists at the said path and has the necessary file permissions. Moreover, the same function runs without error in Illustrator 2020 (24.x). 

function loadWebAccessLibrary() {
  if(typeof PCDesEO == 'undefined' ) {
     var libFilename = "/Library/Frameworks/PCDesEO.framework";
     PCDesEO = new ExternalObject("lib:" + libFilename); /* FAILS w/ File Not Found */
     PCDesEO.pcLogInit();
};

My suspicion is that Illustrator 2021 is interacting badly with the Full Disk Access permissions on Big Sur, but granting Illustrator 2021 full disk access permissions has not solved the problem. Has anyone faced a similar problem? Any suggestions on how to tackle? 

[Anurag Mendhekar · Accepted solution]

This issue seems specific to Illustrator 2021. It got resolved by upgrading to Illustrator 2022.