This is the error message i got
Caught signal
-[NSApplication _crashOnException:] Address = 0x7fff430d1867 (filename not found) [in AppKit]
-[NSApplication reportException:] Address = 0x7fff430d1748 (filename not found) [in AppKit]
-[NSApplication run] Address = 0x7fff42cc6645 (filename not found) [in AppKit]
tchar_main(int, char16_t**) Address = 0x1022c4d58 (filename not found) [in UE4Editor]
main Address = 0x1022c48be (filename not found) [in UE4Editor]
start Address = 0x7fff7169c3d5 (filename not found) [in libdyld.dylib]