Mounting an encrypted partition with "-oencryption=blowfish-256 -ophash=unhashed2" does not work anymore with 2.13.1, while it does work when downgrading to 2.13-r2. The error message I get: ioctl: LOOP_SET_STATUS: No such file or directory This occured after the update to 2.13.1.
you probably forgot USE=loop-aes