I'm having some problems with the interactive banding. At first, I thought it was my custom form, but I've exported a LimeSurvey form, and I can import it with the XML fine, and it bands correctly, but then if I go into interactive banding and delete a box, then attempt to re-create it, I am unable to do so.

I can draw the box round it, and then in the video demo it says a single left click should put the red boxes in, but when I click inside the area I've selected, nothing happens. I've also noticed I get some JavaScript errors popping up in my console:

Uncaught TypeError: Cannot read property '_prototypeEventID' of null prototype-

GET http://quexf/images/spacer.gif 404 (Not Found) spacer.gif:1

Uncaught TypeError: Cannot read property 'style' of null

Tested in Chrome 19, Firefox 7 and Safari 5 with the same result in each. Spacer.gif seems to only be referenced by one of the CSS files from the Prototype library and seems to references the /images directory, which doesn't exist?

Any help on what I'm doing wrong would be appreciated.