Problems with ftp_get

I'm getting an unhelpful error message from my ftp script. It says "Warning, error opening file..." The code in question runs like this. $conn = ftp_connect("ftp.mysite.com"); ftp_login($conn,"user","pass"); ftp_get($conn, $newName, $oldName , FTP_BINARY); I can't see what's causing the error. Any help greatly appreciated as my forehead is getting sore from all the banging it's doing on my desktop (the literal one). Also, what I want to do is allow users to download a large movie (70-90MB) rather than be forced to watch it in the browser window. I figured that making an ftp link would be the best way to do this, but are there other ways? Thanks. Ian.