jamcam3 installation

Installed xppro.downloaded software and driver from jamonline.com Instaltion begins and then message. Do you want to remove all files yes or cancel. With either choice mesaage states transfer error and will not install. SAme software and drivers fro conccord camera corp. Direct PC to repair windows xp and it stated 0 problems. Camera is Jam Cam 3 Pete in North East Md.