Error Message. My sister has owned a JVC GZ-MG20 for about 2months now.Every time she tries to

Question

My sister has owned a JVC GZ-MG20 for about 2months now.Every time she tries to download Video from camera to PC the download starts but after a short time the following message pops up.(Cannot Copy File MOVO4A.The Parameter is Incorrect)the download stops.So far she has not got any video on to her PC.The camcorder downloads the video on to my Laptop okay and onto her friends PC.But it will not download onto her pc.That message keeps coming up and stopping the download.She is getting fed up with it.Can you please help.Running Windows XP Home.Thank You.Cumbrian