Ipod touch not synching correctly

[G.]

I've got an ipod touch 4g and it will read the ipod and play music
that's on the ipod using Banshee.  I synced from Banshee and had it
delete everything on the ipod and replaced it with what was on the
computer but would not play.  The next time I tried to use the ipod
with Banshee I got an error 15 message ( I think but I may not have
that right) , the fix for which I found and implemented successfully.

I am using Ubuntu 11.10.  4g ipod touch 32gig.  Banshee 2.2.1

Any assistance would be appreciated.


garyk