After upgrading to Ubuntu 14.04 I removed the official qtcreator in order to install the modified version from the software center because I'd like to try the SDK.

Fortunately, the docs are now included in the official installation. Unfortunately, there is still something missing: the official examples. Luckily I had my old and official installation still on my harddrive and then, after some tries, I copied the examples to /usr/lib/x86_64-linux-gnu/qt5/examples and change the permission. Then QtCreator detected examples and I was able to select them from the examples section.

But there are still two problems remaining:

Firstly, I am not able to find all examples e.g the network examples (like the fortuneclient) are still missing. For the sake of testing I change the permission of the example folder to 777. Therefore permission shouldn't be a problem.

Secondly, some helping documents to the examples are missing. Therefore I get a normal editor and a blank right part after clicking on an example.