I'm seeing the exact same symptoms as Zev. I've turned showing LUA errors on and upon reloading of the UI I get this error (see the gist):

https://gist.github.com/glajchs/10788764

I believe the stats module is expecting the OQ.table to be initialized, but it isn't so it gets init'ed to an empty object {}. Then calling .new() on that object fails.

I'm not sure when tbl is supposed to be initialized but I don't see it anywhere in the code I have.