Sony Ericsson Xperia ARC ROM Attıktan Sonra Encryption Unsuccesful Hatası

Telefona 5.0.2 ROM attım. Açılırken bu hatayı alıyorum "Encryption was interrupted and can't complete. As a result, the data on your phone is no longer accessible. To resume using your phone, you need to perform a factory reset. When you set up your phone after the reset, you'll have an opportunity to restore any data that was backed up to your Google Account.''