title: KohanaException : Directory APPPATH\cache must be writable
body: <p>i am trying to run a project of kohana-3 in wamp server but getting following error</p>
  
  <p>Kohana_Exception [ 0 ]: Directory APPPATH\cache must be writable</p>
  
  <p>please help.</p>
  
  <p>Previously this was working fine.</p>