Hi Max

Thank you for main.js
It fixed the error message, however there is still some anomalous behaviour with zoom (2 fingers up & down)
Sometime it works, while other time it draws a selection box. This is also true for panning: works intermittently.

Also control clicking on a node does not create a copy of the node.
This is a particularly useful feature, but I think it may have been absent prior to new main.js

Thanks for looking at this. At least now it is possible now to work with NE in v4

Regards
James