Some pages do not show up...

Hi there,
After fixing the Turkish character issue and translating the language files to Turkish I encountered another problem.
Some of the pages do not show up..

Especially in the shopping cart when you try to check out. The pages do not show up...
Another page that does not show up is the log in and log out pages. When you log in I get a blank page.
The address in the address bar is correct I believe but the web page is blank....

When I refresh the page sometimes it shows up sometimes it does not..

I did not touch any other files except language files. And in those language files I only changed the conversations from English to Turkish. I did not touch the code.
website:
https://www.multikopterdukkani.com

Any ideas?

Thanks in advance
Cenk

When you log in I get a blank page.
There are many reasons for a blank page

http://www.zen-cart.com/content.php?124-i-am-getting-a-blank-page-%28or-blank-part-of-a-page%29

Thanks for the reply.
I figured it out. It was the utf8 code in english.php file..

I opened it with Notepad ++ and encoded it with utf8 without BOM and Vola :). All the pages are back now..

Cheers