I have recently added a new purchased theme to my site but when I activate it there is just a blank screen. This happens when I try to activate any any new theme including Twenty-Eleven & Ten.
The thing is I believe that the current theme (Piano Black) has a strange setup as in the original setup seems to span 2 root directories. I.e. different parts are called from different directories. I am really a novice when it comes to php but would appreciate if someone could direct me to somewhere where I could get some answers.