New cygwin x86 2.881 setup not working

setup error when run setup-x86_64.exe 2.881, got this error no matter install from Internet or download then install from local, Unable to extract /etc/ — corrupt package? Unable to extract /etc/postinsall — corrupt package? setup.log 2017/09/11 07:56:22 Starting cygwin install, version 2.881 2017/09/11 07:56:22 User has backup/restore rights 2017/09/11 07:56:22 …