Error: 404 Not Found

Sorry, the requested URL 'http://deltasdazzlingcostumes.com.au/catalog/product_compare/add/product/40050/uenc/aHR0cDovL2RlbHRhc2RhenpsaW5nY29zdHVtZXMuY29tLmF1LzIwcy16b290LXN1aXQtc2l6ZS1tZWQtbWVucy1jb3N0dW1lLmh0bWw%2C/' caused an error:

Not found: '/catalog/product_compare/add/product/40050/uenc/aHR0cDovL2RlbHRhc2RhenpsaW5nY29zdHVtZXMuY29tLmF1LzIwcy16b290LXN1aXQtc2l6ZS1tZWQtbWVucy1jb3N0dW1lLmh0bWw,/'