Navigation buttons are missing

Hi Guys, day one of using this mod, and after some teething trouble with the pic sizes (sorted now), the graphics for the yellow client navigation buttons seems to have gone ! Web displays the thumbs and full size pics, but either side of the thumbs there is a '?' as if the nav icons/ button graphic is missing.

Tried uninstalling and re-installing the module, but still nothing - any idea's please ?

Give us link so we could have a look.