parent::Controller(); white screen of death on new server

[eluser]Unknown[/eluser]
So my site works fine online and my old dev environment, our IT department made a new dev server a new Apache install via wamp: php 5.2.6

Now my site gives a WSOD, I tracked it down to "parent::Controller();" I can echo anything before that is called, once that is called its all white, no errors. No errors in the server error log either. Has anyone had this happen? Anyone have any suggestions I can try?

If you know anything or have any ideas please let me know, I am getting grilled at work to edit this project and I can't even load it now

Thank you.

[eluser]danmontgomery[/eluser]
Check apache log for php errors... What is your error reporting level set at?

[eluser]Unknown[/eluser]
No errors in apache log. I think we found out the issue, this site uses mssql and the new server didn't have the mssql extension enabled. Once we enabled it database connection errors started popping up probably because they changed all that on me too :/ Thanks for the help. Odd that php did not give any errors, CI database classes must have shielded them..