Description
Import script shows the same error for the rest of the products after the first failed validation.
 
Solution
Download the fix:
http://www.viart.com/downloads/admin_import-4.0.8.zip
 
Further, extract 'admin_import.php' in 'admin' folder of your shop replacing an existing file. Please do not forget to make a backup copy of the current file in case something goes wrong.