Hello, I read in LiveCode 6.7.2-rc-1 Release Notes 1/8/15, page # 4 : The Mac engine supports: 10.6.x (Snow Leopard) on Intel 10.7.x (Lion) on Intel 10.8.x (Mountain Lion) on Intel 10.9.x (Mavericks) on Intel What about Yosemite ? No compatible ? Tristement de Paris (sadly from Paris) René