was upgrading ecom add-on but doesnt seem to be going anywhere after clicking Download and install
errors out when going to products list

Fatal error: Block::getInstance() [<a href='block.getinstance'>block.getinstance</a>]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "ProductBlockController" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /usr/home/axsapt/www/htdocs/concrete/concrete/models/block.php on line 329