エンジンが起動できない

UE4初心者です
iMac (21.5-inch, Mid 2011)でUE4をダウンロードし、最初は4.18で起動しようとしたところ
スペック不足でできないと表示されたので4.12.5で起動を試みたところAn Unreal process has crashedというエラーが発生しました
何度かアンインストールしてみたり再起動を行ってみたのですが一向に解決できず困っています
どなたかご助力お願いします

以下が表示されたメッセージになります。もし重複した質問があったら申し訳ありません

MachineId:E04D4F1B114B3BFB5463D3B74782F04F
EpicAccountId:406f62b0821d4159884ce7612d75ef7d

SEGV_NOOP at 0x0

SLSNewWindowWithOpaqueShape Address = 0x7fff760c6485 (filename not found) [in SkyLight]
-[_NSCGSWindow initWithConnectionID:] Address = 0x7fff52811548 (filename not found) [in AppKit]
+[NSCGSWindow(NSCGSWindowCreation) windowWithConnectionID:] Address = 0x7fff52810490 (filename not found) [in AppKit]
_NSCreateWindowWithOpaqueShape2 Address = 0x7fff51f0fe6d (filename not found) [in AppKit]
-[NSWindow _commonAwake] Address = 0x7fff51f0eb5b (filename not found) [in AppKit]
-[NSWindow _commonInitFrame:styleMask:backing:defer:] Address = 0x7fff51d504b0 (filename not found) [in AppKit]
-[NSWindow _initContent:styleMask:backing:defer:contentView:] Address = 0x7fff51d4ec3d (filename not found) [in AppKit]
-[NSWindow initWithContentRect:styleMask:backing:defer:] Address = 0x7fff51d4e6f6 (filename not found) [in AppKit]
invocation function for block in FMacPlatformSplash::Show() Address = 0x10476d117 (filename not found) [in UE4Editor-Core.dylib]
invocation function for block in PerformBlockOnThread(FCocoaRunLoopSource&, void () block_pointer, NSArray*, NSString*, bool) Address = 0x104725250 (filename not found) [in UE4Editor-Core.dylib]
FCocoaRunLoopSource::Process(__CFString const*) Address = 0x104738530 (filename not found) [in UE4Editor-Core.dylib]
-[FCocoaRunLoopSourceInfo perform] Address = 0x1046f1576 (filename not found) [in UE4Editor-Core.dylib]
CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION Address = 0x7fff54784711 (filename not found) [in CoreFoundation]
__CFRunLoopDoSource0 Address = 0x7fff5483c39c (filename not found) [in CoreFoundation]
__CFRunLoopDoSources0 Address = 0x7fff54767700 (filename not found) [in CoreFoundation]
__CFRunLoopRun Address = 0x7fff54766b7d (filename not found) [in CoreFoundation]
CFRunLoopRunSpecific Address = 0x7fff547663d7 (filename not found) [in CoreFoundation]
RunCurrentEventLoopInMode Address = 0x7fff53a73e26 (filename not found) [in HIToolbox]
ReceiveNextEventCommon Address = 0x7fff53a73b96 (filename not found) [in HIToolbox]
_BlockUntilNextEventMatchingListInModeWithFilter Address = 0x7fff53a73914 (filename not found) [in HIToolbox]
_DPSNextEvent Address = 0x7fff51d3ef5f (filename not found) [in AppKit]
-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] Address = 0x7fff524d4b4c (filename not found) [in AppKit]
-[NSApplication run] Address = 0x7fff51d33d6d (filename not found) [in AppKit]
tchar_main(int, wchar_t**) Address = 0x1044ca3ca (filename not found) [in UE4Editor]
main Address = 0x1044c9c3e (filename not found) [in UE4Editor]
start Address = 0x7fff7c104115 (filename not found) [in libdyld.dylib]

より古いverで起動できました