clip to clip tranfer issues

I have a 2 gb Clip and want to transfer music from it to a new 8gb Clip (both running latest firmware),. The music files will not transfer, either directly from player to player,  or when I copy music folder from the 2 gb Clip to my computer (Mac latest version of snow leopard) and then try to transfer to the 8GB.  I get a screen saying that it does not like the files being transferred. 

Since all music does  runs on the original clip, I can not figure out why the new clip will not take the same Mp3s.

I have searched and can not find a reference to the same issue… if this has been address please point me to that threat.

Thanks in advance.