Hi Trog, I apologise for my lazyness. The reply was mostly for the developer so they did not need to investigate this issue, I'm guessing that they know where the setting is.
The setting is on the settings page, section "Amazon Product Preview Settings", there is a little checkbox in the middle of the text, I needed to untick this. "If checked jQuery will be remapped to a new object prior to inserting the amazon code than remapped to $ after."
The details are in the FAQ section: "Why is Product Preview not working for my website?"