Folder does not exist remotely error message

I have iTunes installed on one of my MAC OS X 10.6 machine. I am trying to download the music online from iTunes store and I try to save it and get the following error message.
Problem Occurred Folder “does not exist remotely.
I am not sure why does this error occur. The moment I clicked on OK my machine froze and I had to reboot the machine in order for me to get it back again.
Does anyone have any idea about this error message?
