UPS shipping error when checking out

-- HikaShop version -- : HikaShop Business: 2.3.5
-- Joomla version -- : 3.3.6
-- PHP version -- : 5.3.29
-- Browser(s) name and version -- : All browsers have this issue
-- Error-message(debug-mod must be tuned on) -- : Error while sending XML to UPS. Error code: 111210. Message: The requested service is unavailable between the selected locations.

As well as this error while debugging for lines 491, 492, and 493
Notice: Trying to get property of non-object in /mnt/data/vhosts/casite-551897.cloudaccess.net/httpdocs/plugins/hikashopshipping/ups/ups.php on line 493

If we add a few items to the cart and then proceed to the cart we get an error

Error while sending XML to UPS. Error code: 111210. Message: The requested service is unavailable between the selected locations.

While debugging is enabled we can also see another error
Notice: Trying to get property of non-object in /httpdocs/plugins/hikashopshipping/ups/ups.php on line 493

We have gone thru the forum extensively, double checked all our settings, as well as the UPS.com account itself.
I have tried with and without a zone for the warehouse. I have double checked all addresses both warehouse, user accounts, etc and they are all valid.

If you need to access the admin and server just send me a PM and I will get that access for you to fix this issue.

Nicolas,
Thanks so much for fixing this.
I am also an extension dev and I'll make sure I leave a nice review on the JED for you.
So far I can honestly say that Hikashop is the best Shopping Cart extension I have ever used. Keep up the good work.
One thing I would love to see you add is the ability to sell subscriptions for downloadable products. This is the only reason I could not use Hikashop on my own sites as there are no ways to add time limits for the downloads. RE: 6 month, 12 month, etc.
Regards,
Mike