Fatal Error Class declarations may not be nested in admin/includes/classes/orders.php

[Exalt]

I'm getting the followinf error when I try to check orders from inside admin. Can anyone help with this.
Fatal error: Class declarations may not be nested in /home/exaltapp/public_html/catalog/admin/includes/classes/order.php on line 449

Thanks in advanced

line 449 in the above referenced file is as such:
class order {

[DrByte]

That file appears to be damaged, perhaps by installing an addon that incorrectly altered that file.

Re-upload the original version of that file.

[Exalt]

thanks so much for your help