I installed LM14RC (Mate 64bit) last night, it's fully updated. Nice clean install, although my password isn't coming up for running software manager or from resume so I'm looking into that.
I just went to install Truecrypt (64bit version) which I had on my HDD. In properties it's selected to run as an application. I double clicked and I got the usual popup with "run" as an option, which I picked but nothing happened. Nothing in Hardware Monitor either suggesting it was running. I ended up having to use "run in terminal" and I was then able to install. This may possibly confuse a lot of people.
When installed and mounting a container, in Nemo it doesn't label as "Truecrypt" like LM13/Nautilus did, it comes up with a label saying the size of the container. Is it meant to label as such? I got it confused for an inserted DVD at first, since the container was that size.