I guess you built the wrong empty project, it always end up with an empty window called MainWindow. Qt Creator could open several project at the same time, make sure pencil project is the active project.
And This is normal that clicking on the executable does not work. It need Qt dll libraries, just like phonon4.dll, QtGui4.dll etc. that i provide in windows release.
How things are doing? Did you get more help as a developer lately? Hope so
Sorry for the delay but something got really wrong with my last attend to replace the pencil.exe for the one you provided here.
it kept showing me the empty window, so I decided to go back to the others source code I got here, but none of them worked, only empty window as well.
I decided to uninstall the building soft and re-install it again, but next day my computer only showed bluescreens, couldn´t login.
Yesterday everything seems back to normal since I managed to uninstall the whole building package.