qtCreator: compiler does not find my header file, but the editor does

[TorAn]

I am new to qtcreator, moving from visual studio. I installed vs2012, compiled qt5.0.2, installed qtcreator 2.7 and started a new project. My kit in the project is "Microsoft Visual C++ compiler 11(x86)"

My pro file has following lines:

INCLUDEPATH += C:/mib/TPlat/Components/Exports/ \
C:/mib/TPlat/Components/Common/ \
C:/mib/TPlat/Components/Exports/

When compiling, I am getting following error message:
bars.cpp:1: error: C1083: Cannot open include file: 'aiacompilerwarnings.h': No such file or directory

When I go to the bars.cpp in the editor I can see the hint for the aiacompilerwarnings.h, pointing to the right location and I can open the header in the editor without a problem. So the header exists. It looks like the compiler directive does not point correctly to the location of the header.

Attached image shows the views of the editor with the header and pro file fragment.

I'll appreciate any help to solve this issue.

qtCreatorIssue.png