iTunes not syncing all songs....

[BEN_UK]

Hi,

Running the latest version of iTunes 11.0.5.5 on windows 7 with an 64GB iPhone 5.

My library sits at 3109 items songs/music videos. There's enough free space on the iPhone for all it all to fit.

I've noticed there any many songs missing from albums and also compete albums missing when i tell it to sync my entire music library.

I know the item count is 3109 because thats all on my iPad 2.

But when i tell my iPhone 5 to sync all music including videos it tells me its only copying 2618 items ???

Its failing to copy 491 items ???

Any advice/help would be great!

Thanks