"Cannot Read Device"

This is unusual. I am uploading pictures from my Canon PowerShot digital camera but nothing is happening. The prompt is "cannot read device". What is going on? The batteries are good and my camera is fine as well. I did not drop it or anything. This is the second time the problem occurred. Do you think the camera's cable or the port is the problem? Ugh! I am so upset. Does it mean I need to get a new one? :) There are Canon digital cameras on sale out there, you know.