[Problem Update Php 5.2 To 5.3]

Necessary only IIS
What could be wrong?
All other sites work.

What is the difference in paths in php 5.2 and 5.3?

[Problem Update Php 5.2 To 5.3]

Hello.

After updating php began to issue an error
Does not understand the way back.
 

Warning: require_once(../../init.php) [function.require-once]: failed to open stream: No such file or directory in C:\wwwroot\site.com\www\admin\index.php on line 15

Fatal error: require_once() [function.require]: Failed opening required '../../init.php' (include_path='.;C:\php\pear') in C:\wwwroot\site.com\www\admin\index.php on line 15

All files in place.
Banners are displayed, but I can not go to the admin panel.

IIS6
PHP 5.3.28
include_path. /; c: \ php5 \ includes