I'm an osCommerce newbie, really raw at it so far. Been using volusion and decided to make the jump to osCommerce to reduce monthly fees on a new store. Going through a test checkout process, WOW, four pages....so I looked up the module for one page checkout and I came across a solution.
Right off the bat:
It says to copy these files.
admin/includes/languages/english/images (all files)
Not yet fully accustomed to the structure and which files to expect, I glanced at my server and sure enough none of these files are currently on my server, and this didn't surprise me because it says specifically to 'copy these files' - so the reasonable inference would be that the files are provided on the download. I downloaded OPC1.3_1_2 and not one of the files cited above is in that download, mind you there are OTHER files.
For instance: includes/classes/discount_coupon.php
I'm not seeing any discount_coupon.php.....what gives?