I am not able to package my file. Tried it several times with the same result.
ProcessResult.StdOut: LogWindows: Error: begin: stack for UAT
ProcessResult.StdOut: LogWindows: Error: === Critical error: ===
ProcessResult.StdOut: LogWindows: Error:
ProcessResult.StdOut: LogWindows: Error: Fatal error!
ProcessResult.StdOut: LogWindows: Error:
ProcessResult.StdOut: LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x890f1ee8
ProcessResult.StdOut: LogWindows: Error:
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000B75FCAFD VCRUNTIME140.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007E8C2102 UE4Editor-Core.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007C655965 UE4Editor-Engine.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007C6547C3 UE4Editor-Engine.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007E28173B UE4Editor-CoreUObject.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000797C5264 UE4Editor-UnrealEd.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007966EEEB UE4Editor-UnrealEd.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007967022D UE4Editor-UnrealEd.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007967BC59 UE4Editor-UnrealEd.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x000000007952A580 UE4Editor-UnrealEd.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x0000000079551CB0 UE4Editor-UnrealEd.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000F937EB20 UE4Editor-Cmd.exe!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000F93769FA UE4Editor-Cmd.exe!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000F9376C4A UE4Editor-Cmd.exe!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000F9384177 UE4Editor-Cmd.exe!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000F9384FBF UE4Editor-Cmd.exe!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000DF963034 KERNEL32.DLL!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000DFE61431 ntdll.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error: [Callstack] 0x00000000DFE61431 ntdll.dll!UnknownFunction []
ProcessResult.StdOut: LogWindows: Error:
ProcessResult.StdOut: LogWindows: Error: end: stack for UAT
CommandUtils.Run: Took 11892,2971214s to run UE4Editor-Cmd.exe, ExitCode=3
InternalUtils.SafeDeleteFile: SafeDeleteFile C:\Users\Sidney\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.19\Cook-2018.07.20-01.06.40.txt
InternalUtils.SafeCopyFile: SafeCopyFile C:\Program Files\Epic Games\UE_4.19\Engine\Programs\AutomationTool\Saved\Cook-2018.07.19-21.48.28.txt C:\Users\Sidney\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.19\Cook-2018.07.20-01.06.40.txt
InternalUtils.SafeDeleteFile: SafeDeleteFile C:\Program Files\Epic Games\UE_4.19\Engine\Programs\AutomationTool\Saved\Cook-2018.07.19-21.48.28.txt
ExceptionUtils.PrintExceptionInfo: ==============================================================================
ExceptionUtils.PrintExceptionInfo: ERROR: Cook failed.
ExceptionUtils.PrintExceptionInfo: (see C:\Users\Sidney\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.19\UAT_Log.txt for full exception trace)
ExceptionUtils.PrintExceptionInfo:
ExceptionUtils.PrintExceptionInfo: CommandletException: Editor terminated with exit code 3 while running Cook for C:\Temp\RollingHills\RollingHills.uproject; see log C:\Users\Sidney\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_4.19\Cook-2018.07.20-01.06.40.txt
ExceptionUtils.PrintExceptionInfo: em AutomationTool.CommandUtils.RunCommandlet(FileReference ProjectName, String UE4Exe, String Commandlet, String Parameters)
ExceptionUtils.PrintExceptionInfo: em AutomationTool.CommandUtils.CookCommandlet(FileReference ProjectName, String UE4Exe, String[] Maps, String[] Dirs, String InternationalizationPreset, String[] CulturesToCook, String TargetPlatform, String Parameters)
ExceptionUtils.PrintExceptionInfo: em Project.Cook(ProjectParams Params)
ExceptionUtils.PrintExceptionInfo: Wrapped by AutomationException: Cook failed.
ExceptionUtils.PrintExceptionInfo: em Project.Cook(ProjectParams Params)
ExceptionUtils.PrintExceptionInfo: em BuildCookRun.DoBuildCookRun(ProjectParams Params)
ExceptionUtils.PrintExceptionInfo: em BuildCookRun.ExecuteBuild()
ExceptionUtils.PrintExceptionInfo: em AutomationTool.BuildCommand.Execute()
ExceptionUtils.PrintExceptionInfo: em AutomationTool.Automation.Execute(List1 CommandsToExecute, Dictionary2 Commands)
ExceptionUtils.PrintExceptionInfo: em AutomationTool.Automation.Process(String[] Arguments)
ExceptionUtils.PrintExceptionInfo: em AutomationTool.Program.MainProc(Object Param)
ExceptionUtils.PrintExceptionInfo: em AutomationTool.InternalUtils.RunSingleInstance(Func`2 Main, Object Param)
ExceptionUtils.PrintExceptionInfo: em AutomationTool.Program.Main()
ExceptionUtils.PrintExceptionInfo: ==============================================================================
Program.Main: AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure)