Try following the steps Ehzezz has posted

Total guess here but I'd assume there's code that checks for a specific file in the content, you might already be subscribed but you don't have the latest version of the content because Steam doesn't do a good job at updating your files

Try following the steps Ehzezz has posted Total guess here but I'd assume there's code that checks for a specific file in the content, you might already be subscribed but you don't have the latest version of the content because Steam doesn't do a good job at updating your files