I would definitely upgrade before even attempting to fix this issue ... there are several create account, edit address, etc. issues in v1.3.5 ...
Upgrade to v1.3.7 and include the latest patch at:
http://www.zen-cart.com/forum/showthread.php?t=56216
Does the upgrade fix this issue?
Next, look to see if you can access any page from your secure URL to see if this is a secure issue on your server ... a test might be your file:
/nddbc.html
NOTE: It is a warning about a bad database via an HTML file ... don't let that panick you, this is just a test ...
That should show on both the secure and non-secure URL without any error messages ...



