title: Cannot make a cache safe URL for "14/1033/styles/Themable/corev4.css", file not found. Please verify that the file exists under the layouts directory
body: <p>This is a 2013 Sharepoint Server.</p>
  
  <p>Steps Taken</p>
  
  <p>1) File exists in the following location
  C:\Program Files\Common Files\microsoft shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\1033\STYLES\corev4.css</p>
  
  <p>C:\Program Files\Common Files\microsoft shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\1033\STYLES\Themable\corev4.css</p>
  
  <p>2) Language packs have been installed correctly</p>
  
  <p>3) Incremental Crawl has been set to weekends only</p>
  
  <p>4) IIS reset fixes the problem temporarily. After non business hours it appears again and continues until IIS reset.</p>
  
  <p>Can any one help ?</p>