Registering new customer - problem

Hi there!
I have a problem with creating new account. When i fill in form and click submit page is reloading and i see blank page, nothing there. Can someone help me to resolve this problem?

end of address: index.php?main_page=create_account
i'm using ZenCart 1.3.7 PL

Using the Debug Utility (from the Free Software Add Ons tab above) you can locate the problem file and fix it.

Tina

I dont know how extacly use this debug file.
I've uploaded it into folder /admin/includes/extra_configures, /includes/extra_configures and /includes/languages/polish/extra_configures and i've reloaded this site with problem. I don't see any file DEBUG-* in /cache folder

To attempt to show PHP debug errors on-screen, create and upload a new file, like this: [...]
i've created and uploaded this file into /includes/local/ and nothing is happening :/

SOLVED!

I had a problem in one file (dont remember name) Problem was with a define() statement.

I am having the same issue as this person - trying to create a customer account just refreshes the page.
I uploaded the debug file and it does not seem to be creating any error log file in my cache directory.
Thi was NOT happening until i installed the SSL certificate - now i suddenly have this issue.
Please advise...?

website: https://www.rocknsocks.net
zencart version 1.3.8
running on apache server at dreamhost
SSL certificate recently installed
browser: firefox 3.0.4 / mac os 10.5.5

thanks!
jen