the swapping of images in places isnt a standard zen cart feature? do you have swap images via mouseover or click installed?

i had this and that module and tabbed products pro is not compatible, despite not having the images enabled on the tabs i couldnt find a work around so eventually had to remove it.

i presume the reason for it not working is much the same as it not working for ask a question mod in tab, any click is registered to be a cart add click or tab swap click, any modules that rely on a click action seem to be useless with this.