Build error: unknown cook failure on UE4.17

Hello,

I have issues building my sci-fi scene project for windows 64-bits on UE4.17, and I’m seeking some help.
I’m using the ThirdPerson_Blueprint to play my character in an modular environment composed of baked static meshes, animated skeletal meshes, actor blueprints such as dynamic stairs, a terrain and foliage meshes.

I thought an uasset got corrupted or did not compile well, but as I checked all the errors concerning my assets and it still won’t build correctly, I 'm blocked.

UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: === Critical error: ===
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 596]
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: Array index out of bounds: 0 from an array of size 0
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: KERNELBASE.dll!0x00000000B26095FC
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Core.dll!0x00000000878E14A4
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Core.dll!0x00000000876CAD4B
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Core.dll!0x0000000087660169
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Engine.dll!0x0000000084A3B838
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!0x00000000870CB010
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!0x00000000871CAD82
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!0x00000000871E15E6
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-CoreUObject.dll!0x00000000871E0B32
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!0x0000000081A846A3
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!0x0000000081ABA920
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!0x000000008195E3A2
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-UnrealEd.dll!0x00000000819836A1
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!0x00000000487EB53F
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!0x00000000487E379A
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!0x00000000487E39EA
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!0x00000000487F02D9
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: UE4Editor-Cmd.exe!0x00000000487F1083
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: KERNEL32.DLL!0x00000000B2AA13D2
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: ntdll.dll!0x00000000B54254E4
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: ntdll.dll!0x00000000B54254E4
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error:
UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: end: stack for UAT
UATHelper: Packaging (Windows (64-bit)): CommandUtils.Run: Run: Took 221,7681122s 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.CommandletException: BUILD FAILED: Failed while running Cook for C:\Users\Nathan\Documents\Jacquard\2015_2016\TFA SF\MyThirdPersonGame 4.17\MyThirdPersonGame.uproject; see log C:\Users\Na
than\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.17\Cook-2017.08.16-19.29.30.txt
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.CommandUtils.RunCommandlet(FileReference ProjectName, String UE4Exe, String Commandlet, String Parameters)
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.CommandUtils.CookCommandlet(FileReference ProjectName, String UE4Exe, String[] Maps, String[] Dirs, String InternationalizationPreset, String[] CulturesToCook, String TargetPlatform, String Parameters)
UATHelper: Packaging (Windows (64-bit)): à Project.Cook(ProjectParams Params)
UATHelper: Packaging (Windows (64-bit)): — Fin de la trace de la pile d’exception interne —
UATHelper: Packaging (Windows (64-bit)): à Project.Cook(ProjectParams Params)
UATHelper: Packaging (Windows (64-bit)): à BuildCookRun.DoBuildCookRun(ProjectParams Params)
UATHelper: Packaging (Windows (64-bit)): à BuildCookRun.ExecuteBuild()
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.BuildCommand.Execute()
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.Automation.Execute(List1 CommandsToExecute, Dictionary2 Commands)
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.Automation.Process(String[] Arguments)
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.Program.MainProc(Object Param)
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.InternalUtils.RunSingleInstance(Func`2 Main, Object Param)
UATHelper: Packaging (Windows (64-bit)): à AutomationTool.Program.Main()
UATHelper: Packaging (Windows (64-bit)): Program.Main: AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults: Error: Unknown Cook Failure

I’m using Visual Studio 17.3 on Windows 8.1
Previously I had issues while updating the SK_Mannequin with my personal character, the animblueprint showed errors about the VR parmeters.

I hope you can provide me a solution.

Best regards,

Nathan LEBON