I'm not familiar with TrueCrypt or how to get it, but this sounds like a new way that they are using menu. It's kinda difficult to say how that is without looking at the source.
A work around is to modify the TrueCrypt launcher so that it does "UBUNTU_APPMENU=" before executing the executable. This will make it so that it doesn't use the application menus.
I'm not familiar with TrueCrypt or how to get it, but this sounds like a new way that they are using menu. It's kinda difficult to say how that is without looking at the source.
A work around is to modify the TrueCrypt launcher so that it does "UBUNTU_APPMENU=" before executing the executable. This will make it so that it doesn't use the application menus.