I have several problems while trying to import products into the shopping cart. In most cases the import does not work at all with a wide variety of error messages. Even when I set-up a product manually, export it to a csv file, open that file in Excel, do NOT edit it in any way, delete the product from the cart and try to import it again, I get an error message saying Invalid Header and the import does not occur. Why is it that the program is not able to import a file that it has exported? The file see attachment. On top, when I set-up a new csv file and set just one-word content for each field, I am able to import, but there is a problem with letters with accents that do not display correctly. What codepage am I supposed to use to be able to import Central European (Czech) correctly? Thank you