Error on try to build a project example.

Hi, i recently install Qt Creator 5.0.2 and when i try to build any project example deployed together Qt i have the following error message:

Error while building/deploying project affine (kit: Desktop Qt 5.0.2 GCC 32bit)
When executing step 'Make'

I try to change/add path for qmake on environment options, build options, etc .... but not success !!!

Anybody can help me and indicate one step by step method to solve this?

Thank's in advance.

You will have to post the actual compiler error messages (they appear before the lines you copied) before we will have any idea what the problem might be.