Problem with cryptsetup - encrypted swap

Running Mepis 6.0 with most of the 6.0 (not 6.5) upgrades.
I decided to encrypt my swap file according to the Mepis instructions http://www.mepis.org/docs/en/index.php/Encrypted_Partitions.

I added the correct lines to /etc/fstab and /etc/crypttab and rebooted.

In the Mepis Wiki on the topic is says you can check if it's working, so I did the first check.. cat /proc/swaps which gave an expected report -
Filename Type Size Used Priority
/dev/mapper/cswap partition 125568 11836 1

However, when I tried the second verify command.. cryptsetup status cswap
I get the following error
Command failed: Incompatible libdevmapper 1.02.05 (2006-04-19)(compat) and kernel driver

I went into synaptic and installed the 1.01 libdevmapper alongside 1.02. rebooted. same error. I considered removing 1.02 but that will also remove crypto disks and a few other programs, so I bailed on that.

How can I fix this?

Thanks in Advance.

P.S. Please include the option to setup encrypted home and swap during initial install with 6.5