The supplied download link (http://sebols.webd.pl/download/andrzej/andrzej.zip) leads to a HTTP 404 error as follows:
"The requested URL /download/andrzej/andrzej.zip was not found on this server. Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request."
Perhaps you meant to redirect it to this file instead ? http://sebols.webd.pl/download/andrzej/projekt.zip