# What is Error in "Cycle Node"?

**URL:** <https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081>\
**Category:** Blueprint\
**Tags:** error, unreal-engine, Blueprint, question\
**Created:** [June 12, 2017, 10:56pm UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081 "2017-06-12T22:56:16Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![CrashAngel](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/crashangel/32/467279_2.png) [@CrashAngel](https://forums.unrealengine.com/u/CrashAngel)\
**Post date:** [June 12, 2017, 10:56pm UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081/1 "2017-06-12T22:56:16Z")

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Hi, When I Package my game i receive error Cycle Node error in my BluePrints… What is this error???

Part Log is Down

```
LogSavePackage:Error: Cycle Node Create:Toolkit_Page_Templates_C /Game/CMSLayouts/Functions/Toolkit_Page_Templates.Default__Toolkit_Page_Templates_C
LogSavePackage:Error: Cycle Node Serialize:Function /Game/CMSLayouts/Functions/Toolkit_DataTables.Toolkit_DataTables_C:Generate GridView
LogSavePackage:Error: Cycle Node Serialize:BlueprintGeneratedClass /Game/CMSLayouts/Functions/Toolkit_DataTables.Toolkit_DataTables_C
LogSavePackage:Error: Cycle Node Create:Toolkit_DataTables_C /Game/CMSLayouts/Functions/Toolkit_DataTables.Default__Toolkit_DataTables_C
LogSavePackage:Error: Cycle Node Serialize:Function /Game/CMSLayouts/Functions/Toolkit_Page_Templates.Toolkit_Page_Templates_C:Create Page (GridView / Details)
LogSavePackage:Error: Cycle Node Serialize:BlueprintGeneratedClass /Game/CMSLayouts/Functions/Toolkit_Page_Templates.Toolkit_Page_Templates_C
LogSavePackage:Error: ----- Create:Toolkit_Page_Templates_C /Game/CMSLayouts/Functions/Toolkit_Page_Templates.Default__Toolkit_Page_Templates_C contained a cycle (listed above).
LogLinux:Error: appError called: Assertion failed: Assertion failed: [File:/home/crash/UnrealEngine/Engine/Source/Runtime/CoreUObject/Private/UObject/SavePackage.cpp] [Line: 3253] 
EDL dep graph contained a cycle (see errors, above). This is fatal at runtime so it is fatal at cook time.

LogLinux: === Critical error: ===
Unhandled Exception: SIGSEGV: invalid attempt to write memory at address 0x0000000000000003

LogLinux: Assertion failed: Assertion failed: [File:/home/crash/UnrealEngine/Engine/Source/Runtime/CoreUObject/Private/UObject/SavePackage.cpp] [Line: 3253] 
EDL dep graph contained a cycle (see errors, above). This is fatal at runtime so it is fatal at cook time.
```

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<div class="post-metadata">

**Author:** ![InsaneSasha](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@InsaneSasha](https://forums.unrealengine.com/u/InsaneSasha)\
**Post date:** [June 27, 2017, 4:15am UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081/2 "2017-06-27T04:15:04Z")

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Same here. I guess its something specific to 4.16. Cook worked with same project on 4.15

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<div class="post-metadata">

**Author:** ![redbox](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@redbox](https://forums.unrealengine.com/u/redbox)\
**Post date:** [June 27, 2017, 4:30am UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081/3 "2017-06-27T04:30:01Z")

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What is CMSLayouts? Do you use it as plugin, and it’s compatible with 4.16？

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<div class="post-metadata">

**Author:** ![InsaneSasha](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@InsaneSasha](https://forums.unrealengine.com/u/InsaneSasha)\
**Post date:** [June 27, 2017, 4:53am UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081/4 "2017-06-27T04:53:31Z")

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Found an answer. This seems to be a known bug: [Unreal Engine Issues and Bug Tracker (UE-43458)](https://issues.unrealengine.com/issue/UE-43458) To “fix” it for now you have to turn off Event Driven loader in project settings

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<div class="post-metadata">

**Author:** ![CrashAngel](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/crashangel/32/467279_2.png) [@CrashAngel](https://forums.unrealengine.com/u/CrashAngel)\
**Post date:** [June 27, 2017, 2:36pm UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081/5 "2017-06-27T14:36:26Z")

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CMS Layouts is my Project to create online courses or animated presentations based on datatables …  
When complete i send to MarketPlace …

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<div class="post-metadata">

**Author:** ![CrashAngel](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/crashangel/32/467279_2.png) [@CrashAngel](https://forums.unrealengine.com/u/CrashAngel)\
**Post date:** [June 27, 2017, 2:38pm UTC](https://forums.unrealengine.com/t/what-is-error-in-cycle-node/396081/6 "2017-06-27T14:38:26Z")

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CMS Layouts is my Project to create online courses or animated presentations based on datatables … When complete i send to MarketPlace …