I run my own Dedicated Server and in the rebuild from last time, I removed all the files and then migrated only those latest know files into a new site directory.
I've not changed the FTP account info I gave you before.
There is an HTML editor on the Mod page.. Not in the insert page and from the looks of this times insert/injection the iFrame was not even converted to a proper tag. HTML editor may be the culprit.
I'll go over the FTP logs tomorrow also.