The DEB is for 0.3.4 but there is a newer version and the change log for the newer version indicates that I need it (based on what it says and what I have i.e., it works with Windows made MD5 files that have the slash 'backwards' etc. and most of my checksums were made in Windows).
I installed 0.3.5 following the directions which consisted of basically the following:
Now to be clear I did this on Linux Mint 12 (64-Bit) and it worked without issues. However I've been playing with Ubuntu 12.04 Beta 1 (and recently I did a fresh install of Beta 2) and I really like it. In fact I want to switch to Ubuntu 12.04 once the final version comes out. So I tried the above in my Ubuntu 12.04 Beta 2 (32-Bit) and it doesn't work. I get an error when trying to run the program (see attachment in my first post here).