Hi all,Update
Repeating what I did yesterday (and better documenting it!), showed one mistake I made yesterday: there was an undefined tiddler in the list to be packed which gave the Javascript error: "TypeError: tiddler is undefined"Today
TW5.1.19
With the corrected list I still see a Javascript error: "TypeError: options.event.event.target is undefined" BUT the plugin as such is created (and works).
Hi Simon,I am not a coder, so the error doesn't ring a bell for me.Thanks for investigating.

Cheers,
Ton