All your workshop addons not loading? Heres a fix.
Take all of your addons from the l4d2 workshop out of the workshop folder and put them into your addons folder. Delete the workshop folder inside your addons folder now. Don't log into l4d2 yet. now go to your internet browser and type l4d2 workshop and click subscribed items and unsubscribe from them. now close out and start l4d2. Enjoy having ALL your addons and not having to wait for addons to load (which don't load from the workshop half the time.)