Problems with installing qt creator on ubuntu 14.04

[sarge]

Hi !
I have a problem with installing Qt Creator on Ubuntu. When I install Qt Creator through Ubuntu Software Centre I get an application error. In terminal it looks like this:
Starting process: "/usr/bin/cmake" "--help"
Błędna instrukcja (core dumped)
So i tried qt creator online and offline installers, but there i get an installation error when doing the default installation. After ignoring errors the installation is complete but Qt Creator is not working.
These are the errors I get:

Error during installation process (qt.54.gcc):
Execution failed(Crash): "/home/sarge/Qt//Tools/QtCreator/bin/sdktool addQt --id qt.54.gcc --name Qt %{Qt:Version} GCC 32bit --type Qt4ProjectManager.QtVersion.Desktop --qmake /home/sarge/Qt/5.4/gcc/bin/qmake"

Error during installation process (qt.54.gcc):
Execution failed(Crash): "/home/sarge/Qt//Tools/QtCreator/bin/sdktool addKit --id qt.54.gcc_kit --name Desktop Qt %{Qt:Version} GCC 32bit --toolchain x86-linux-generic-elf-32bit --qt qt.54.gcc --debuggerengine 1 --devicetype Desktop"

Error during installation process (qt.54.android_armv7):
Execution failed(Crash): "/home/sarge/Qt//Tools/QtCreator/bin/sdktool addQt --id qt.54.android_armv7 --name Qt %{Qt:Version} for Android armv7 --type Qt4ProjectManager.QtVersion.Android --qmake /home/sarge/Qt/5.4/android_armv7/bin/qmake"

How can I make Qt Creator work?

[edit:koahnig]: code tags added

[sierdzio]

The path looks dubious at best. Are you sure you are giving the installer a good path to install to?

[sarge]

I think so. I didn't change a thing. Installer used the default path.

[sierdzio]

Make sure you have the dependencies:

sudo apt-get install build-essential
sudo apt-get build-dep qt5-qmake

[sarge]

Done. First dependencie was already there in the newest version. Second one got installed. But Qt Creator still isn't running.