permission denied during transfer

I'm running 3.6.1 (build 221), and after a successful connection, I can't transfer any files:

Permission denied.
Error code: 3
Error message from server: Permission denied (*)
Request code: 14

I'm logged in as 'admin' and I need to be logged in as 'root' in order to transfer... how can this be done? I've looked through the FAQ's and other posts, but couldn't find a direct match.

Thanks,

I can only transfer files to the admin's directory. I guess that's the limitiation?

You can transfer file to where your server allows it. It up to you to do the proper configuration. WinSCP does not limit you in any way.