Prestashop 1.4.6.2 and PayPal USA, Canada v1.3.8 by PrestaShop

[Awnauticalgifts]

Hello all
I'm very self taught and have been very busy for the last year so I'm just relearning the basics of my web sites. I upgraded paypal to PayPal USA, Canada v1.3.8 because of the ssl bug. Now I get paid but the back office never gets to order completed. I see that I get 301 redirects in logs when paypal sends https://www.mysite.com/modules/paypalusa/validation.php. I have checked .htaccess and robot.txt, I have looked in cpanel for redirects no luck. I have upgraded Backward compatibility v0.6.1 by PrestaShop still no luck. I'm using Prestashop 1.4.6.2 on this site and I did a lot of custom work so upgrading at this time is a no go. This is my first time here and I'm over my head so I would really like a little advice.

Thanks Wayne