Generated the keys using puttygen.exe provided with cwRsync and using winSCP to test connection want putty Private key.
Importing key in using coping and pasting public key directly from Putty Key Generator window i.e. require no editing since starts with ssh-ras <randowm_key>
Also verified key placed in c:/user/username/.ssh/authorized_keys
get from winSCP: Server refused our key
on copssh log shows:
2014.02.27 19:12:53 - debug1: Could not open authorized keys '/var//.ssh/authorized_keys': No such file or directory
2014.02.27 19:12:53 - debug1: trying public key file /var//.ssh/authorized_keys
Proper path would be: