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Error packaging: Unknown cook failure

Please help urgently i need to package a game but i get this error i have attached a note pad file with the output log

In the log, there is an error described like this:



UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: begin: stack for UAT
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: === Handled ensure: ===
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error:
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: Ensure condition failed: InVersion != nullptr && FCString::Strlen(InVersion) [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\Core\Private\Misc\NetworkVersion.cpp] [Line: 29]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: **ProjectVersion used for network version must be a valid string!**
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: Stack:
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff863827136 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff863560c82 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff86357b346 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff8635dd5f3 UE4Editor-Core.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff83faba422 UE4Editor-Engine.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff85ee984c8 UE4Editor-UnrealEd.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff68d24e01c UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff68d245968 UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff68d245bba UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff68d253dac UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff68d254ce6 UE4Editor-Cmd.exe!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff8adc71fe4 KERNEL32.DLL!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: [Callstack] 0x00007ff8adfaf061 ntdll.dll!UnknownFunction ]
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error:
UATHelper: Packaging (Windows (64-bit)):   LogOutputDevice: Error: end: stack for UAT


Go to your Project Settings and check if Project Version has a value. By default it is 1.0.0.0, but you can fill anything in. However, it seems it may not be empty.

projectver.png

thanks it worked