Security Error On Login - Using Updated Template!! Help!!

[mccalld]

OK, so I have zencart on the server and everything is going along, I test a few basic features before I start customizing a lot, and the login feature doesn't work. You sign up for a new account and everything comes up correctly, but when you logout and log back in, it says that there has been a security error. What could be the problem. I am coding challenged, so any explanation or fixes have to be spelled out for me, and please know that I REALLY appreciate your help.

Additionally, I had read on another forum that it was a problem with using old templates with an updated version of Zen Cart, but I downloaded a template that was for the current version from the Zen Cart download page, and it did the same thing as the old one. Any ideas?

You can try it out for yourself if you like.. keep in mind the site is hardly customized at all at this point, save for a few basic settings.

http://www.queencandles.com/Sales/ZC...2125/index.php