Quote Originally Posted by vieraci View Post
ui_mainmenu.h:36:34: error: clientNotebookPlugin.h: No such file or directory
Does ClientNotebookPlugin::includeFile() return "clientNotebookPlugin.h"? If so, make it return "clientNotebook.h" (or whatever is the correct file name).

clientNotebookPlugin/clientNotebookPlugin.h:4:42: error: QDesignerCustomWidgetInterface: No such file or directory
Try adding "CONFIG += designer" to the .pro file (and re-generating the vs project).