Nikon5000 not detected with istopmotion

Hi, I’m using a Nikon 5000 and would like to be able to link it to istopmotion but my camera doesn’t seem to be reconised… Any ideas why?

Please make sure the camera is set to JPG recording and manual focus to avoid long loading times (as many settings to “manual” as possible is recommend, also “PTP-mode” if available). It is also advised that there is a certain amount of space available on the memory card (an empty one is even better). It is also strongly advised you use at least iStopMotion 2.8.2 and OSX 10.6.7 or newer due to technical reasons.