Cannot use cryptsetup from live usb

[irw]

I feel like I am banging my head against a brick wall here.

I have an encrypted system (11.10) installed from the alternate install cd.

I am now trying to access the encrypted partition from a live cd (running on USB stick), but I cannot get cryptsetup to work.

I booted into the live environment.
Installed cryptsetup by
sudo apt-get install cryptseup

I then tried to access my partition:

sudo cryptsetup luksOpen /dev/sda3 crypt_sda3
and this is my output:

Enter passphrase for /dev/sda3:
No key available with this passphrase.
Enter passphrase for /dev/sda3:
No key available with this passphrase.
Enter passphrase for /dev/sda3:
No key available with this passphrase.


I know I am using the correct passphrase - it works fine when I boot into the system normally.

I tried also
sudo modprobe dm-crypt but this has no effect.

What am I doing wrong?

I have searched the forums / elsewhere and see others carrying out the steps I have followed without this problem.

[irw]

OK - I'm an idiot.

Cryptsetup works fine - the problem was the keyboard layout.

I have a UK layout, the default for the live cd is US - and my passphrases use some characters that are not on the same keys!