# 4.15 Build fails "EDL dep graph contained a cycle" **URL:** \ **Category:** Platform & Builds\ **Tags:** build-error, unreal-engine, build-failed, UE4, Blueprint, question\ **Created:** [March 20, 2017, 12:41pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352 "2017-03-20T12:41:02Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Vincere](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Vincere](https://forums.unrealengine.com/u/Vincere)\ **Post date:** [March 20, 2017, 12:41pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/1 "2017-03-20T12:41:02Z")
Project builds fine in 4.14.3 in 4.15.0 I get the following errors when trying to package: UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:159][0]LogSavePackage:Error: Cycle Node Create:GeneralFunctions\_C /Game/Blueprints/MainCharacter/GeneralFunctions.Default\_\_GeneralFunctions\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:159][0]LogSavePackage:Error: Cycle Node Serialize:Function /Game/Blueprints/SaveGameBP/SaveGameFunctions.SaveGameFunctions\_C:AddEventHistory UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:160][0]LogSavePackage:Error: Cycle Node Serialize:BlueprintGeneratedClass /Game/Blueprints/SaveGameBP/SaveGameFunctions.SaveGameFunctions\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:160][0]LogSavePackage:Error: Cycle Node Create:SaveGameFunctions\_C /Game/Blueprints/SaveGameBP/SaveGameFunctions.Default\_\_SaveGameFunctions\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:160][0]LogSavePackage:Error: Cycle Node Serialize:Function /Game/Blueprints/MainCharacter/GeneralFunctions.GeneralFunctions\_C:GenerateItemAndAddToInventory UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:160][0]LogSavePackage:Error: Cycle Node Serialize:BlueprintGeneratedClass /Game/Blueprints/MainCharacter/GeneralFunctions.GeneralFunctions\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:160][0]LogSavePackage:Error: ----- Create:GeneralFunctions\_C /Game/Blueprints/MainCharacter/GeneralFunctions.Default\_\_GeneralFunctions\_C contained a cycle (listed above). UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:293][0]LogSavePackage:Error: Cycle Node Create:EnemyFunctions\_C /Game/Blueprints/Enemies/EnemyFunctions.Default\_\_EnemyFunctions\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:293][0]LogSavePackage:Error: Cycle Node Serialize:Function /Game/Blueprints/MainCharacter/SpellHandling.SpellHandling\_C:NovaActivation UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:293][0]LogSavePackage:Error: Cycle Node Serialize:BlueprintGeneratedClass /Game/Blueprints/MainCharacter/SpellHandling.SpellHandling\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:293][0]LogSavePackage:Error: Cycle Node Create:SpellHandling\_C /Game/Blueprints/MainCharacter/SpellHandling.Default\_\_SpellHandling\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:293][0]LogSavePackage:Error: Cycle Node Serialize:Function /Game/Blueprints/Enemies/EnemyFunctions.EnemyFunctions\_C:Death UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:293][0]LogSavePackage:Error: Cycle Node Serialize:BlueprintGeneratedClass /Game/Blueprints/Enemies/EnemyFunctions.EnemyFunctions\_C UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.52.42:294][0]LogSavePackage:Error: ----- Create:EnemyFunctions\_C /Game/Blueprints/Enemies/EnemyFunctions.Default\_\_EnemyFunctions\_C contained a cycle (listed above). UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:852][0]LogWindows:Error: begin: stack for UAT UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:852][0]LogWindows:Error: === Critical error: === UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:852][0]LogWindows:Error: UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:852][0]LogWindows:Error: Fatal error: [File:D:\Build++UE4+Release-4.15+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\SavePackage.cpp] [Line: 3808] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:853][0]LogWindows:Error: EDL dep graph contained a cycle (see errors, above). This is fatal at runtime so it is fatal at cook time. UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:853][0]LogWindows:Error: UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:853][0]LogWindows:Error: UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:853][0]LogWindows:Error: KERNELBASE.dll!0x0000000055327788 UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:853][0]LogWindows:Error: UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:853][0]LogWindows:Error: UE4Editor-Core.dll!FOutputDevice::Logf\_\_VA() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:70] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:854][0]LogWindows:Error: UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:854][0]LogWindows:Error: UE4Editor-CoreUObject.dll!FEDLCookChecker::Verify() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\coreuobject\private\uobject\savepackage.cpp:3810] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:854][0]LogWindows:Error: UE4Editor-UnrealEd.dll!UCookCommandlet::NewCook() [d:\build++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:1733] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:854][0]LogWindows:Error: UE4Editor-UnrealEd.dll!UCookCommandlet::Main() [d:\build++ue4+release-4.15+compile\sync\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:868] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:855][0]LogWindows:Error: UE4Editor-Cmd.exe!FEngineLoop::PreInit() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2005] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:855][0]LogWindows:Error: UE4Editor-Cmd.exe!GuardedMain() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\launch.cpp:127] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:855][0]LogWindows:Error: UE4Editor-Cmd.exe!GuardedMainWrapper() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:855][0]LogWindows:Error: UE4Editor-Cmd.exe!WinMain() [d:\build++ue4+release-4.15+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:855][0]LogWindows:Error: UE4Editor-Cmd.exe!\_\_scrt\_common\_main\_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe\_common.inl:264] UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:856][0]LogWindows:Error: KERNEL32.DLL!0x0000000058078364 UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:856][0]LogWindows:Error: ntdll.dll!0x00000000582E70D1 UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:856][0]LogWindows:Error: ntdll.dll!0x00000000582E70D1 UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:856][0]LogWindows:Error: UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.19-02.53.07:856][0]LogWindows:Error: end: stack for UAT UATHelper: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 1554.6164871s to run UE4Editor-Cmd.exe, ExitCode=3 UATHelper: Packaging (Windows (64-bit)): Project.Cook: Cook failed. Deleting cooked data. UATHelper: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Cook failed. —\> AutomationTool.AutomationException: BUILD FAILED: Failed while running Cook for C:\Fictorum\depotcopy\Fictorum.uproject; see log C:\Users\wilde\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Progra m+Files+Epic+Games+UE\_4.15\Cook-2017.03.18-21.53.08.txt UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.RunCommandlet(FileReference ProjectName, String UE4Exe, String Commandlet, String Parameters) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.CookCommandlet(FileReference ProjectName, String UE4Exe, String[] Maps, String[] Dirs, String InternationalizationPreset, String[] CulturesToCook, String TargetPlatform, String Parameters) UATHelper: Packaging (Windows (64-bit)): at Project.Cook(ProjectParams Params) UATHelper: Packaging (Windows (64-bit)): — End of inner exception stack trace — UATHelper: Packaging (Windows (64-bit)): at Project.Cook(ProjectParams Params) UATHelper: Packaging (Windows (64-bit)): at BuildCookRun.DoBuildCookRun(ProjectParams Params) UATHelper: Packaging (Windows (64-bit)): at BuildCookRun.ExecuteBuild() UATHelper: Packaging (Windows (64-bit)): at AutomationTool.BuildCommand.Execute() UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Automation.Execute(List`1 CommandsToExecute, CaselessDictionary`1 Commands) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Automation.Process(String[] Arguments) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Program.MainProc(Object Param) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.InternalUtils.RunSingleInstance(Func`2 Main, Object Param) UATHelper: Packaging (Windows (64-bit)): at AutomationTool.Program.Main() UATHelper: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=25 (Error\_UnknownCookFailure) UATHelper: Packaging (Windows (64-bit)): BUILD FAILED The blueprint libraries compile just find, and I can’t figure out what would be considered a “cycle” Any help would be greatly appreciated. Thanks! ---
**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\ **Post date:** [March 29, 2017, 2:32pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/2 "2017-03-29T14:32:36Z")
Hi Vincere, This means you have a circular dependency going on. I.E. A function calling another function which calls back to the first function. It appears you may have more than one instance of this. I’d look into your General Functions, Default\_EnemyFunctions, and SpellHandling. See here: [Event Driven Loader Enabled, get Cycle Nodes Error in Cooked Game - Programming & Scripting - Epic Developer Community Forums](https://answers.unrealengine.com/questions/566561/event-driven-loader-enabled-get-cycle-nodes-error.html) ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [March 29, 2017, 2:39pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/3 "2017-03-29T14:39:12Z")
I don’t know about what exactly Vincere is using, but since he says it worked fine in 4.14 I’m quite sure his functions are fine. @Vincere You can enable blueprint nativization, then this bug does not occur. Its a bug with the event driven loader and blueprints, for some reason it doesn’t like when function libraries are calling each other. Disabling the event driven loader will also fix this issue, it became enabled by default in 4.15. That’s why your project worked correctly in 4.14. Let’s hope this bug gets fixed soon 🙂 ---
**Author:** ![Vincere](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Vincere](https://forums.unrealengine.com/u/Vincere)\ **Post date:** [March 29, 2017, 2:41pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/4 "2017-03-29T14:41:33Z")
Yea, works fine once I turned of EDL. Sadly, I can’t nativize my project, it crashes on open when I do so to a Fatal Error (using Inclusive). Using, Exclusive the nativized assets are too large. ---
**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\ **Post date:** [March 29, 2017, 6:01pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/5 "2017-03-29T18:01:18Z")
@Vincere, can you check out John’s scenario explained in his latest comment here: [Event driven loader crash - Programming & Scripting - Epic Developer Community Forums](https://answers.unrealengine.com/questions/580820/event-driven-loader-crash.html) If yours lines up with his scanario, you can find the resolution for this issue on that thread. ---
**Author:** ![John\_Alcatraz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@John\_Alcatraz](https://forums.unrealengine.com/u/John_Alcatraz)\ **Post date:** [March 29, 2017, 6:04pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/6 "2017-03-29T18:04:01Z")
Yeah, thanks for linking it here ! @Vincere here’s the link to the issue tracker, you can vote on it there: > **[The Unreal Engine Issues and Bug Tracker](https://issues.unrealengine.com/issue/UE-43458)** > > Welcome to the Unreal Engine Issue and Bug Tracker. You can check the status of an issue and search for existing bugs. See latest bug fixes too. ---
**Author:** ![Vincere](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Vincere](https://forums.unrealengine.com/u/Vincere)\ **Post date:** [March 29, 2017, 6:07pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/7 "2017-03-29T18:07:40Z")
Hey , we definitely have a lot of functions that reference other functions in our Function Libraries, seems to line up with the bug listed here: [Unreal Engine Issues and Bug Tracker (UE-43458)](https://issues.unrealengine.com/issue/UE-43458), for now disabling EDL for packaging works for us ---
**Author:** ![Vincere](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Vincere](https://forums.unrealengine.com/u/Vincere)\ **Post date:** [March 29, 2017, 6:16pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/8 "2017-03-29T18:16:54Z")
Hey John, I voted ---
**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\ **Post date:** [March 30, 2017, 7:29pm UTC](https://forums.unrealengine.com/t/4-15-build-fails-edl-dep-graph-contained-a-cycle/388352/9 "2017-03-30T19:29:11Z")
John, thanks for catching this and linking it to your issue. Saves some time on my end for sure. We’ll continue any updates on that thread.