eror perang qgv

1. Running build steps for project PerangQGV...
2. . . . . /PerangQGV/PerangQGV.pro' -r -spec linux-g++
3. . . . ."/usr/bin/qmake-qt4" exited normally.
4. . . . . "/usr/bin/make" -w
5. make: Entering directory `/Untitled Folder/PerangQGV-build-desktop-Qt_4_8_1_in_PATH__System__Release'
/usr/bin/uic-qt4 ../PerangQGV/mainwindow.ui -o ui_mainwindow.h
6. g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I../PerangQGV -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -I. -I../PerangQGV -I. -o main.o ../PerangQGV/main.cpp
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I../PerangQGV -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4 -I. -I. -I../PerangQGV -I. -o mainwindow.o ../PerangQGV/mainwindow.cpp
../PerangQGV/mainwindow.cpp: In constructor 'MainWindow::MainWindow(QWidget*)':
../PerangQGV/mainwindow.cpp:16:37: error: 'Align' is not a member of 'Qt'
7. make: *** [mainwindow.o] Error 1
8. make: Leaving directory `/Unduhan/Untitled Folder/PerangQGV-build-desktop-Qt_4_8_1_in_PATH__System__Release'
9. 11:13:33: The process "/usr/bin/make" exited with code 2.
10. Error while building project PerangQGV (target: Desktop)
11. When executing build step 'Make'

kalau yang pendeknya begini kang:
1. . . . ./Unduhan/Untitled Folder/PerangQGV-build-desktop-Qt_4_8_1_in_PATH__System__Release/../PerangQGV/mainwindow.cpp:-1: In constructor 'MainWindow::MainWindow(QWidget*)':
2.. . . .  /home/salonk/Unduhan/Untitled Folder/PerangQGV-build-desktop-Qt_4_8_1_in_PATH__System__Release/../PerangQGV/mainwindow.cpp:16: error: 'Align' is not a member of 'Qt'