LoadVars --- Something I'm missing?

Trying to write a simple e-mail script, I’ve done this before, but now I’m getting an error I’ve never seen. The code posts to a PHP script that uses the mail command. The script is up on my server and when I run the movie thru cntrl+enter on my computer, it works just fine.

When I upload to my server (where the PHP is located) and try the movie from the web, my loadvars posts all the variables as “undefined” (leaving the name, email, subject and message as “undefined”). I don’t get why this works on my computer and won’t work on my web site… could it be my webhost?