I'm upgrading from 2.5 to 2.7.1. I followed steps 1-7 exactly. On step 8 I am supposed to upload all 2.7.1 files to my site (I am using FTP). No files, not even themes, will upload. I even tried to upload the old 2.5 files and nothing happens. I realize this may not be a WP problem, but I'm looking for help wherever I can get it. Thanks!