update – corrupt set up files

Every time an update comes out I try to update through clinic office programme i.e. TOOLS>CHECK FOR UPDATE>”YES UPDATE IS AVAIBLE”> I then close clinic office and re start the programme and I get the error message > corrupt set up files and I have to obtain update through pioneer website.
Although this isn’t a BIG deal it’s annoying when I have to do it on multiple computers.
Am I doing anything wrong? Or does everybody have this problem.
[Both computers are running windows vista]

Niall Manifold
wimbledon clinic