BUILD FAILED PackagingResults:Error: Error Unknown Cook Failure

Hi thanks for the reply im still struggling with this packaging issue:
any idea what i am suppose to do with these errors if anything:

UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:707][ 0]LogInit:Display: LogOutputDevice:Error: Stack:
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:707][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-Core.dll!0x00000000548A95D6
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:707][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-Core.dll!0x0000000054659B72
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:708][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-Core.dll!0x000000005466B656
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:708][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-KismetCompiler.dll!0x000000004A3B56BF
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:708][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-KismetCompiler.dll!0x000000004A3892B9
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:709][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-KismetCompiler.dll!0x000000004A38C2C6
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:709][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-KismetCompiler.dll!0x000000004A38B56B
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:709][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-UnrealEd.dll!0x00000000529A9BCE
UATHelper: Packaging (Windows (64-bit)): UE4Editor-Cmd: [2017.03.21-18.16.53:709][ 0]LogInit:Display: LogOutputDevice:Error: UE4Editor-UnrealEd.dll!0x0000000052958439