A couple of issues..
1. I followed everything in the video, including changing the update.php to 777, which made it break. I then proceeded to changing it back and now it wont work. I banned someone purely to test this! I still have the errors as I had before. All the information about the server is correct.
2. The update.php takes a long time to load, and sometimes times out, could be my nice, free web host though
EDIT: Ill try the starting '/' as someone suggested. Can't connect to my ftp at the moment though :/
EDIT2: Doesn't work still :/