I am trying to use Cisco Unified Operating System Administration/Software Upgrades/Install/Upgrade to install a .sgn file for a new type of phone. I put in the info for our SFTP server (using the Remote Filesystem choice), but when I click Next, the only thing that happens is the bottom left of the IE page says Error on Page. I can connect to the SFTP server using WINSscp, so I don't think the problem is with the SFTP server. I am using version 188.8.131.526-1. Any suggestions would be appreciated.