I'm noob but i have used litestep b4 with other themes.
I have just installed again the Litestep latest build and installed the new Serenity theme by mojomonkee. What I can see is a dialog to ask me change back the previous theme or not. And i see nothing except the popup, where are the others stuffs???

i dunno, it might just not be compatible with your setup, i get same thing, popup only and i don't feel like debugging someone else's code

I have the same issuse with the serenity theme. Pleeease some fix it.

Maybe you should try contacting the author?

try downloading an updated version from my site and if you still have trouble... i dunno. my theme is apparently too leet for joo or something.