Place crabs, sausage cut into bite-sized pieces, stew meat and gizzards in a 6-quart pot over medium heat. Cover and let cook in own fat and juices for 30 minutes. Heat oil in skillet and add flour to make roux. Stir constantly until very brown. Lower heat, add onions and cook over low heat until onions wilt. Pour onion mixture over meat in pot. Slowly add water, stirring constantly. Bring to a boil.

Add chicken wings cut in half, necks skinned and cut, ham cubed,shrimp peeled and deveined, paprika, salt, garlic, parsley and thyme. Let simmer for 30 minutes. Add oysters and liquid and cook for 10 more minutes. Remove from heat. Add file powder and stir well. Serve over rice.