Magento - Seo Layered Navigation Plugin Issue in 1.13

Question

We've recently upgraded to 1.13 on our site and the only plugin that does not seem to work is the "Seo Layered Navigation" by "Ecommerce Team". I have contacted their team, but they do not support 1.13 yet. Everything in the plugin works great, except for the actual ajax calls for filtered results. The "is_ajax" component does not seemed to be picked up for any reason.

site.com/catename/filter/manufacturer/manuwesearchingfor?is_ajax=1 always returns a 404 error.

The observer for ajax is not being executed for some reason. In the config.xml of the plugin we have:

 <frontend>
    <events>
        <controller_action_layout_generate_blocks_after>
        <observers>
            <setfilterspagetitle>
            <type>singleton</type>
            <class>ecommerceteam_sln/observer</class>
            <method>setPageTitle</method>
            </setfilterspagetitle>
        </observers>
        </controller_action_layout_generate_blocks_after>
        <controller_action_layout_render_before_catalog_category_view>
        <observers>
            <init_ajax_request>
            <type>singleton</type>
            <class>ecommerceteam_sln/observer</class>
            <method>initAjax</method>
            </init_ajax_request>
        </observers>
        </controller_action_layout_render_before_catalog_category_view>
        <controller_action_layout_render_before_catalogsearch_result_index>
        <observers>
            <init_ajax_request>
            <type>singleton</type>
            <class>ecommerceteam_sln/observer</class>
            <method>initAjax</method>
            </init_ajax_request>
        </observers>
        </controller_action_layout_render_before_catalogsearch_result_index>
    </events>

I cannot find any documentation on why the change from 1.12 to 1.13 would have removed one of these observers.

Answer 1

Issue was the new redirect engine in Magento EE. The "Ecommerce Team" was awesome and had a fix in a day!