Upgrade to 2.3.0.2

Hi All,

Was using opencart 1.5.6.1 and am trying to upgrade to the latest version of opencart.
url: http://www.burleyarms.co.nz

After following opencarts upgrade documents page step by step i got as far as the opencart upgrade menu before the success page where it tell you to remove install directory. when i press the continue button to go to the upgrade complete page with the option to go to the store or admin i got a blank page with the following error

Can anyone please help elaborate on this and a fix please:

Fatal error: Uncaught exception 'Exception' with message 'Error: Could not load model total!' in /home/burleyar/public_html/system/engine/loader.php:169 Stack trace: #0 [internal function]: Loader->{closure}(Array, Array) #1 /home/burleyar/public_html/system/engine/proxy.php(25): call_user_func_array(Object(Closure), Array) #2 /home/burleyar/public_html/catalog/controller/common/cart.php(37): Proxy->__call('getTotal', Array) #3 /home/burleyar/public_html/catalog/controller/common/cart.php(37): Proxy->getTotal(Array) #4 [internal function]: ControllerCommonCart->index(Array) #5 /home/burleyar/public_html/system/engine/action.php(51): call_user_func_array(Array, Array) #6 /home/burleyar/public_html/system/engine/loader.php(24): Action->execute(Object(Registry), Array) #7 /home/burleyar/public_html/catalog/controller/common/header.php(129): Loader->controller('common/cart') #8 [internal function]: ControllerCommonHeader->index(Array) #9 /home/burleyar/public_html/system/engine/action.php(51): call_user_func_array(Array, Arra in /home/burleyar/public_html/system/engine/loader.php on line 169


Really appreciate your help asap
Cody

Search for 'Error: Could not load model total!'
You will find qphorias solution

Can you please provide link to this thread

Thanks so much

http://forum.opencart.com/viewtopic.php?f=191&t=166012

EDIT: sorry wasnt at my pc