Hi, As I install ParaView3.4 I specify the QT_QMAKE_EXECUTABLE as c:/qt-win-opensource-src-4.5.0/bin/qmake.exe in CMake. However I got the error "Qt4.3.0 or greater not found. Please check the QT_QMAKE_EXECUTABLE variable" I'm sure qmake is located at c:/qt-win-opensource-src-4.5.0/bin/ . Vista, free version Qt 4.5, visual studio 6.0 Thanks. Yixun