I can confirm that (1) The eCart object is set to store in sessions (2) Press a Add to Cart button creates a empty session file in the sessions folder (3) I've uploaded onto a live server and it works fine (4) Sessions appear to be working fine, i.e. I can create a session variable called test set it to "hello" an echo it onto another page, it also creates a file with the value in it on the testing server. (5) The cart page is set as the redirect in the add to cart behaviour, after being redirected on the testing server the cart is empty.
I've added the zip file as requested, also included my php.ini file just in case you can spot something in it that could be causing the issue.
I'm using PHP version 2.2.13, Also getting the following in the php error log:
[29-Jul-2010 13:27:12] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\Program Files\PHP\ext\php_mssql.dll' - The specified module could not be found.
in Unknown on line 0.
Don't understand why it can't be found considering it is in the specified directory.