UE4 editor will not launch

I have a MacBook Pro, 2.5GHz intel core i5, 4GB 1600 MHz DDR3, Intel Graphics 4000 1539MB. I downloaded it and ran the editor no problem the first time, but since then the editor will not launch from epic games launcher or from the files in finder. What’s going on and how do I fix it?

“UE4Editor cannot be opened because of a problem”
Problem Details and System Configuration:

Process: UE4Editor [472]
Path: /Users/USER/Desktop/UE4Editor.app/Contents/MacOS/UE4Editor
Identifier: com.epicgames.UE4Editor
Version: ???
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: UE4Editor [472]
User ID: 501

Date/Time: 2015-10-21 20:04:17.684 -0600
OS Version: Mac OS X 10.11 (15A284)
Report Version: 11
Anonymous UUID:

Time Awake Since Boot: 790 seconds

System Integrity Protection: enabled

Crashed Thread: 0

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Application Specific Information:
dyld: launch, loading dependent libraries

Dyld Error Message:
Library not loaded: @rpath/Chromium Embedded Framework.framework/Chromium Embedded Framework
Referenced from: /Users/USER/Desktop/UE4Editor.app/Contents/MacOS//UE4Editor-WebBrowser.dylib
Reason: image not found

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Model: MacBookPro9,2, BootROM MBP91.00D3.B0B, 2 processors, Intel Core i5, 2.5 GHz, 4 GB, SMC 2.2f44
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333235533643465238432D50422020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333235533643465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (7.21.94.25.1a3)
Bluetooth: Version 4.4.0f4 16320, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD , 500.11 GB
Serial ATA Device:
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: Hub
USB Device: Apple Internal Keyboard / Trackpad
USB Device: IR Receiver
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: USB 3.0 Bus
Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1

Hi Bryce,

Here are some things to try: (*Read all steps first)

  1. In the launcher select Library and scroll to the top
  2. Select a version of the engine and try to launch from there, if it fails, continue:
  3. Click on the upper left corner until an x appears and choose uninstall this version of the engine: this will not delete your projects
  4. Click on the yellow plus “+Add Versions” buttons. Download Version 4.9.2 first
  5. After installing be sure to click on the version and verify it (if it does not do this automatically)
  6. Try to launch 4.9.2
  7. If this fails, uninstall version first, copy your projects to a safe directory, then uninstall all Unreal Assets from your Mac and reinstall.
  8. Reinstall engine version 4.9.2 first
  9. Try to launch. If successful, download and install version 10 preview and launch.
  10. List item

Alternatively, AFTER uninstalling versions of the engine but BEFORE uninstalling the launcher you can try to:

  1. With the editor/launcher closed, Navigate to the “Go” menu and press Command + Option to reveal the “Library” listing
  2. Navigate to Library/Application Support/Epic/UnrealEngine/4.9/DerivedDataCache/)
  3. Delete the “DerivedDataCache” directory
  4. Try launching the editor

Let us know if these did or did not resolve the issue.

Thanks,

.

Hi Bryce,

Since we have not heard back from you in a while, we are marking this post closed for tracking purposes. If you are still experiencing a problem launching the editor, please respond with the requested information and we will continuing investigating the issue.

Thanks,