Button click returns HTTP 404 page

[msg82256]

I've installed three times and checked all of the files but still get a 404 page when I click on the EDIT button to edit an order.

 

In the commmand line it's showing the following in the command line when I click the button http://www.anysite.com/admin/FILENAME_ORDERS_EDIT?oID=30.

 

Clearly it's not finding the file edit_orders.php. When I manually type in http://www.anysite.com/admin/edit_orders.php?oID=30 it works just fine, taking me to the Order Editor which seems to work fine.

 

Any idea what is wrong? I've pasted the code correctly into orders.php, but it still doesn't want to work.

 

Any help would be appreciated.

 

Thanks,