Yesterday I get InDesign Update and after that the external object AdobeXMPScript is not reachable from InDesign.
Try to execute the attached code:
if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject('lib:AdobeXMPScript'); alert (ExternalObject.AdobeXMPScript);
And you will get this error:
Error Number: 52
Error String: I/O error
File: /Users/.../Scripts Panel/InDesign Test.jsx
Version 16.0-ME/en_AE/Scripts/Scripts Panel/InDesign Test.jsx
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This is the known bug in the latest version of the Indesign and already reported to the Indesign team. It will be fixed soon.
You can read following thread for the same
This bug has not been resolved also there was an update from few days.
The fix is expected in 16.3.
Please read above link again. Updates are available there.