Packaging failed due to unknown error

Hello,

I need some urgent help. when i am trying to package my level to a windows 64bit platform it keeps showing up with packaging failed due to unknown error. i have the output log but do not understand it. can someone please help urgently? thank you
i have attached the output log…link text

Check if you need the “PlayUp” Plugin. Enable/ Disable it depending on your needs, package again and report back! <3

It looks like it solved some of the issues in the output log but it is still failing.
Can you have another look at the new output log and let me know what is wrong now?
I have attached the output log.link text

Thanks.

I have tried to package my other projects as well and i am getting the same
UATHelper: Packaging (Windows (64-bit)): BUILD FAILED
PackagingResults:Error: Error Unknown Error…

However it works ok if I just try and package a brand new project…

Any help?

Install Windows SDK v8.1, try to compile again and report back! <3

hey sorry have been pretty busy. I tried that and it seems to be working great. thank you very much for your help