I am a Pakistani photographer and bought Mamiya ZD in 2008 from Germany never used this one only a couple of times. But couple of days ago I started using it again it was working fine. But when i tried to tether it with a windows PC its only stuck on busy and don't do anything, metering and everything seems to be working fine no issues at all with camera settings but it is not taking any picture, no focusing at all camera only blinks busy whenever i press the shutter button. Is this some sort of software issue. Please need assistance some shoots are coming up within some days.