Cook error: Serial size mismatch

Development Platform & Builds
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1

Hi,
I want to package game and this happens to me:

UE4Editor-Cmd: [2018.02.28-21.07.17:298][  0]LogWindows:Error: begin: stack for UAT
UE4Editor-Cmd: [2018.02.28-21.07.17:298][  0]LogWindows:Error: === Critical error: ===
UE4Editor-Cmd: [2018.02.28-21.07.17:299][  0]LogWindows:Error: 
UE4Editor-Cmd: [2018.02.28-21.07.17:299][  0]LogWindows:Error: Fatal error: [File:C:\UnrealEngine\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp] [Line: 3498] 
UE4Editor-Cmd: [2018.02.28-21.07.17:299][  0]LogWindows:Error: NeoFurAsset /Game/Aliens/Pawns/Grabit/Neofur/GrabitFur_main2.GrabitFur_main2: Serial size mismatch: Got 118415, Expected 127139
UE4Editor-Cmd: [2018.02.28-21.07.17:300][  0]LogWindows:Error: 
UE4Editor-Cmd: [2018.02.28-21.07.17:300][  0]LogWindows:Error: 
UE4Editor-Cmd: [2018.02.28-21.07.17:300][  0]LogWindows:Error: 
UE4Editor-Cmd: [2018.02.28-21.07.17:301][  0]LogWindows:Error: end: stack for UAT
CommandUtils.Run: Run: Took 231,4415212s to run UE4Editor-Cmd.exe, ExitCode=3
Project.Cook: Cook failed. Deleting cooked data.

I tried to delete GrabitFur_main2.GrabitFur_main2, create new and save it, but still it will crash at this file. Any ideas?