P: Javascript exception when duplicating layers across documents

We discovered that the scripts in our AddOn (https://creative.adobe.com/addons/pro...) are crashing 100% of the time in the CC2014.2 release. In investigation we’ve discovered that it’s the Javascript function artLayer.duplicate() when used to duplicate a manipulated layer to a different document that throws an exception. This is code that has been unchanged for a long time and continues to work in CS6, CC2012 and worked in CC2014.1.

We’ve created a a simple sample script that is 100% reproducible (under Windows 8 and 64bit Photoshop CC2014.2) and works correctly in CS6 and CC2012.
https://www.dropbox.com/s/eg8y2yeacp5...