[eluser]TheFuzzy0ne[/eluser]
Sorry, the cache library has to be loaded and initialised by your app, so somewhere, there should be a call to $this->load->driver('cache'). Just removing that won't fix the problem, though, since there will be calls to the cache driver all over your app. You need to make sure that APC is installed on your server. If it's not, you will need to remove all references to $this->cache->apc from your app.