Now lookat the post title, there are words which are undefined undefined undefined. It looks like that there is something wrong with it. Screenshot of the above was taken from the blog Gregorule.blogspot.com so it so happens as I was using the same theme, I will show you what it actually should display.
Noticed that there are dates shown beside the button. Yes, now how to fixed it then?
Basically all I ever did was to change the Timestamp Format to the one below.
Edit : Thanks gregorule for rechecking for me, here is the right one instead.
Conclusion, why does it work when I change it to this? That’s because the internal script inside the theme needs the date to be in that format. So now you know! Hope this help those who are using this theme.
Sorry for the inconvenience caused.