jaunty "losetup -e blowfish" appears incompatible with intrepid

[thoughtbox]

I've just installed 9.04 beta, and tried to do the following (ensuring the passphrase is correct):

th@t61p:~$ sudo losetup -e blowfish /dev/loop0 blowfish.img
Password:

However, the filesystem appears to be invalid, suggesting that the image does not like the 9.04 blowfish encryption?

th@t61p:~$ sudo fsck -y /dev/loop0
fsck 1.41.4 (27-Jan-2009)
e2fsck 1.41.4 (27-Jan-2009)
fsck.ext2: Superblock invalid, trying backup blocks...
fsck.ext2: Bad magic number in super-block while trying to open /dev/loop0

This works fine on 8.10, so not sure if there is a new method of doing this in 9.04?

[thoughtbox (tor-houghton)]

Has anyone else experienced this? The failure to mount the blowfish image is _not_ a result of a bad passphrase.

/TB