Sorry for the really late reply. I've only just realized that a reply was posted here. The version I use is 3.7.0. The problem stems from the problem that, in the templates folder under "blue-chrome", there are only three subfolders (global, poll, home). All the other essential subfolders are missing. In my case, I copied them from the default theme and the problem is now solved. These subfolders should be added over github as well.