Hi guys, When I'm trying to compile miniAudible, I have the error message indicated below. Any hints? My uname -a is: Linux pablo 4.4.0-135-generic #161-Ubuntu SMP Mon Aug 27 10:45:01 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Many thanks, Cheers, Pablo pablo@pablo:~/MusicStudioPablo/applications/miniAudicle-1.3.5.2/src$ make linux-jack make -f makefile.qt-jack make[1]: Entering directory '/home/pablo/MusicStudioPablo/applications/miniAudicle-1.3.5.2/src' g++ -c -m64 -pipe -D__LINUX_JACK__ -D__UNIX_JACK__ -D__CK_SNDFILE_NATIVE__ -D__LINUX__ -D__PLATFORM_LINUX__ -Ichuck/src -DHAVE_CONFIG_H -O3 -w -D_REENTRANT -fPIC -DHAVE_CONFIG_H -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -I. -isystem /usr/include/x86_64-linux-gnu/qt5 -isystem /usr/include/x86_64-linux-gnu/qt5/QtGui -isystem /usr/include/x86_64-linux-gnu/qt5/QtNetwork -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -Ibuild -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -o build/mAMainWindow.o qt/mAMainWindow.cpp In file included from qt/mAMainWindow.cpp:25:0: qt/mAMainWindow.h:28:23: fatal error: QMainWindow: No such file or directory compilation terminated. makefile.qt-jack:756: recipe for target 'build/mAMainWindow.o' failed make[1]: *** [build/mAMainWindow.o] Error 1 make[1]: Leaving directory '/home/pablo/MusicStudioPablo/applications/miniAudicle-1.3.5.2/src' makefile:32: recipe for target 'linux-jack' failed make: [linux-jack] Error 2 (ignored)