Error in Windows Project Launch and Project Packaging

Hi DjFrex, I have done the Packaging by reducing length of project name. at the end of the packing I got following error

InternalUtils.SafeCopyFile: WARNING: Failed to copy G:\VR\Saved\StagedBuilds\WindowsNoEditor\VR\Content\Paks\VR-WindowsNoEditor.pak to G:\VR_Packaging\WindowsNoEditor\VR\Content\Paks\VR-WindowsNoEditor.pak
UATHelper: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Failed to copy G:\VR\Saved\StagedBuilds\WindowsNoEditor\VR\Content\Paks\VR-WindowsNoEditor.pak to G:\VR_Packaging\WindowsNoEditor\VR\Content\Paks\VR-WindowsNoEditor.pak
UATHelper: Packaging (Windows (64-bit)): at AutomationTool.CommandUtils.CopyFileIncremental(String Source, String Dest, Boolean bAllowDifferingTimestamps, Boolean bFilterSpecialLinesFromIniFiles) in C:\Program Files\Epic Games\UE_4.15\Engine\Source\Programs\AutomationTool\AutomationUtils\CommandUtils.cs:line 1394

VR-WindowsNoEditor.pak is around 33GB, my disk did not have adequate where the packaging file is created. I have a question why when packaging, the files are duplicated in Project\Saved\StagedBuilds\ folder even if we add a folder specifically packaging? same content is available in Packaging folder as well as in Project\Saved\StageBuilds folder.

Thank you