Casio Exilim ex-z40 won't down load

Try reinstalling your camera drivers. You need to uninstall it first while docking station is removed. Then reinstall your camera software through the cd that comes with it then try plugging it in again either on the same usb slot or a different usb slot. Then try docking the camera again if theirs any interruptions. Usually if you transfer the docking stations usb cord plug to a different usb slot, the transfer goes haywire. Try transferring to a different usb slot...

If all else fails, get a card reader for your cameras memory card, it is way faster...