Hi Guys

Have re-installed Snow Leopard and am pleased to report ControlMac is working properly.

Many thanks for all the help and advice. I am going to leave the MacBook as it is and not install Lion until I am sure it will work with WD MyWorldBook and ControlMac

Regards

Tony
861v6+OE34+LPS+ID41, HD621, MC200, DSP7200.2, DSP5200HC, M6, DSW, Sky HD, BDP103.