Toribash 3.7 Beta is obviously a beta, so you will encounter bugs that should be fixed in the final release. So, you can either play with Toribash 3.69 or with Toribash 3.7 Beta.
But it's not just intended as a preview, is it? I thought the point of a beta release was to have it tested for bugs...
I've got one or two that I'd like to report, but I don't know where to do it.