I have Seo Suite extension installed and sorting does not work.

Please do the following:


1) Open app/code/local/MageWorx/SeoSuite/Block/Catalog/Product/List/Toolbar.php

2) Replace 
extends Mage_Catalog_Block_Product_List_Toolbar
with
extends Amasty_Sorting_Block_Catalog_Product_List_Toolbar

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