URGENT error 13001
 

[I tried to resync my music...It started as normal showing ex: 15 of 167 songs or whatever but at the end it said XXXX Iphone could not be synced error (13001) (something similar). When i went to check my ipod on the iphone it said No Content but when i checked the music section under iphone in itunes it showed the music there.
I restored the iphone again and it still didnt work.
Please advise on how to solve. I am using iphone 3G.
URGENT]