Strange behaviour of GUI design and runtime GUI

[Guest]

Hi,
I have a project in which I created a GUI 2-3 months ago. It worked and still works very well. Now I decided to add some other elements such as buttons, text fields on GUI. In Qt Designer 4.0.3 I added the elements but if I run the program I don't see the new elements. It shows only old elements that previously (2-3 months ago) added.
I bakced up and deleted *.ui file, the projects is of course not compiled. I backed up and deleted *.pro.user file, still the same, and there is no "Layout".
Im adding pictures to explain clearly:

In Qt Designer:

In Runtime exe:

What can be wrong?
Thanks.

[kahlenberg]

Ohh sorry, I forget to log in.

[VRonin]

Try re-running qmake (build->run qmake in Qt Creator) and/or deleting the build directory

[kahlenberg]

I forget to mention it. I cleaned the project, build directory, I re-run the qmake and re-build. Still same.

[p3c0]

@kahlenberg Probably the build directory is still the old one ?