error mounting truecrypt disk with cryptsetup

Trying to use `cryptsetup` to mount a drive encrypted with truecrypt. Doing this: sudo cryptsetup open --type tcrypt --readonly /dev/sdc1 encrypted_drive and then typing the passphrase gives me: Activation is not supported for 4096 sector size. **What does this error mean, and how can I mount my truecrypt volume?** Useful information: * The drive was encrypted with truecrypt 7.1a * The machine trying to do this is booted into a live USB version of ubuntu, specifically ubuntu 14.04.01, i386 desktop version. * `cryptsetup --version yields cryptsetup 1.6.1` * removing the `--readonly` option produces no change