Printomat.js loading issue

Hi

Print-O-Matic was working great for me, but currently I’m getting a blank screen when I click the print icon. I have noticed the following error in the browser console which seems to be related to the loading of printomat.js:

Uncaught TypeError: Cannot read property ‘innerHTML’ of undefined
at HTMLDivElement.<anonymous> (printomat.js:43)
at HTMLDivElement.dispatch (jquery.js:3)
at HTMLDivElement.r.handle (jquery.js:3)

Is there a way of resolving that, perhaps by enqueueing the script differently, and loading printomat.js in the body or footer?

Many thanks!