EqualLogic Upgrade FTP Permission Denied Error

Whilst trying to update firmware on a Dell EqualLogic PS6500 I received the error FTP: Permission denied: recv failed. It turns out that this was down to a Java problem on my Windows 7 workstation, rather than the EqualLogic.

The solution was to install a Microsoft HotFix. Once this was installed, and the workstation restarted, the upload worked first time.