Thank you for using our software and really sorry for the inconvenience.
From the description in your post, this is the problem of input info to your iTunes. We believe that you may use other 3rd party iPhone managment tools to import or output your files between your device and iTunes. And these 3rd party tools may destroy your iTunes data base, so we can not input info into it. Our software will stop write info into your iTunes, once our software find out that your iTunes data base is broken to avoid more problem.
Would you please send an email to our support team via email@example.com and our team will help you to solve your problem. And in the email would you please include the â€œlog fileâ€ and the â€œiTunes Library.itlâ€. Thank you for patience.