dgdev

I had the same problem.
To fix it you must create a folder titled “eshop_downloads” within your “wp-content” folder. (If you don’t want to modify the code. Make sure you set correct permissions on all folders.

You can look at the code which gives the problem right here:

$eshop_goto=$upload_dir.'/../eshop_downloads';
$eshop_from=$plugin_dir.'/eshop/downloads';
if(!file_exists($eshop_goto.'/.htaccess')){
	wp_mkdir_p( $upload_dir );
	wp_mkdir_p( $eshop_goto );
	if ($handle = opendir($eshop_from)) {
		/* This is the correct way to loop over the directory. */
		while (false !== ($file = readdir($handle))) {
			if($file!='' && $file!='.' && $file!='..'){
				copy($eshop_from.'/'.$file,$eshop_goto.'/'.$file);
				chmod($eshop_goto.'/'.$file,0666);
			}
		}
		closedir($handle);
	}
}

Seems like this problem might be limited to windows IIS users, as the directory is never created. Possibly a permissions error. Anyhow just manually create the folder to be error free.