edit src/muuli_wdr.cpp and comment lines 3169-3171
parent->AddSeparator();
parent->AddTool( ID_BUTTONNEWPREFERENCES, _("New Prefs"), amuleDlgImages( 0 ), wxNullBitmap, wxITEM_NORMAL, _("New Preferences Work in Progress") );
parent->EnableTool( ID_BUTTONNEWPREFERENCES, FALSE );
change to
//parent->AddSeparator();
//parent->AddTool( ID_BUTTONNEWPREFERENCES, _("New Prefs"), amuleDlgImages( 0 ), wxNullBitmap, wxITEM_NORMAL, _("New Preferences Work in Progress") );
//parent->EnableTool( ID_BUTTONNEWPREFERENCES, FALSE );
now 'make' again