Всё сломалось!

Класс: DB

engine::run();
engine::runComp("catcontent");
catcontent::run();
DB::execSQL("SELECT 
				cat_common_props.item_id,
				cat_common_props.title,
				cat_common_props.url,
				cat_sect_tree.type_id,
				cat_common_props.seo_items_title,
				cat_common_props.seo_items_keywords,
				cat_common_props.seo_items_description,
				cat_common_props.exclude_menu,
				cat_common_props.data_cache
			FROM cat_sect_tree 
				JOIN cat_common_props ON cat_sect_tree.sect_id=cat_common_props.item_id
			WHERE lkey<=823 AND rkey>=946 ORDER BY lkey ASC");

SELECT cat_common_props.item_id, cat_common_props.title, cat_common_props.url, cat_sect_tree.type_id, cat_common_props.seo_items_title, cat_common_props.seo_items_keywords, cat_common_props.seo_items_description, cat_common_props.exclude_menu, cat_common_props.data_cache FROM cat_sect_tree JOIN cat_common_props ON cat_sect_tree.sect_id=cat_common_props.item_id WHERE lkey<=823 AND rkey>=946 ORDER BY lkey ASC
MySQL server has gone away