Error: 404 Not Found

Sorry, the requested URL 'http://e-onbatteries.com/index.php/catalog/product_compare/add/product/14/uenc/aHR0cDovL2Utb25iYXR0ZXJpZXMuY29tL2luZGV4LnBocC9yZWNyZWF0aW9uYWwvMTJ2Lmh0bWw_bW9kZT1saXN0/form_key/uUHGWDWIOqMpLqFR/' caused an error:

Not found: '/index.php/catalog/product_compare/add/product/14/uenc/aHR0cDovL2Utb25iYXR0ZXJpZXMuY29tL2luZGV4LnBocC9yZWNyZWF0aW9uYWwvMTJ2Lmh0bWw_bW9kZT1saXN0/form_key/uUHGWDWIOqMpLqFR/'