FTP create directory does not work properly

I fixed the problem.
All you need to do:
1. Replace the wp-file-upload/lib/wfu_io.php file with the code I attached
2. No matter what, you have to add :21 (or the ftp port you use if different of the default 21) Like: username:password@serveraddress:21 on your FTP credentials
3. Enable Passive Mode

Tha’s All!

Code:

<?php

function wfu_create_directory($path, $method, $ftpdata) {
	$ret_message = "";
	if ( $method == "" || $method == "normal" ) {
		mkdir($path, 0777, true);
	}
	else if ( $method == "ftp" && $ftpdata != "" ) {
		$ftpdata_flat =  str_replace(array('\:', '\@'), array('\_', '\_'), $ftpdata);
		$pos1 = strpos($ftpdata_flat, ":");
		$pos2 = strpos($ftpdata_flat, "@");
		if ( $pos1 && $pos2 && $pos2 > $pos1 ) {
			$ftp_username = substr($ftpdata, 0, $pos1);
			$ftp_password = substr($ftpdata, $pos1 + 1, $pos2 - $pos1 - 1);
			list($ftp_host, $ftp_port) = explode(":", substr($ftpdata, $pos2 + 1));
			$conn_id = ftp_connect($ftp_host,$ftp_port);
			$login_result = ftp_login($conn_id, $ftp_username, $ftp_password);
			if ( $conn_id && $login_result ) {
				$flat_host = preg_replace("/^(.*\.)?([^.]*\..*)$/", "$2", $ftp_host);
				echo $flat_host." ";
				$pos1 = strpos($path, $flat_host);
				echo $pos1." ";
				if ( $pos1 ) {
					echo $path." ";
					$path = substr($path, $pos1 + strlen($flat_host.":".$ftp_port));
					echo $path;
					ftp_mkdir($conn_id, $path);
					ftp_chmod($conn_id, 493, $path);
				}
				else {
					$ret_message = WFU_ERROR_ADMIN_FTPDIR_RESOLVE;
				}
			}
			else {
				$ret_message = WFU_ERROR_ADMIN_FTPINFO_INVALID;
			}
			ftp_quit($conn_id);
		}
		else {
			$ret_message = WFU_ERROR_ADMIN_FTPINFO_EXTRACT;
		}
	}
	else {
		$ret_message = WFU_ERROR_ADMIN_FTPINFO_INVALID;
	}
	return $ret_message;
}

function wfu_upload_file($source, $target, $method, $ftpdata, $passive, $fileperms) {
	$ret_array = "";
	$ret_array["uploaded"] = false;
	$ret_array["admin_message"] = "";
	$ret_message = "";
	$target_perms = substr(sprintf('%o', fileperms(dirname($target))), -4);
	$target_perms = octdec($target_perms);
	$target_perms = (int)$target_perms;
	if ( $method == "" || $method == "normal" ) {
		$ret_array["uploaded"] = move_uploaded_file($source, $target);
		if ( !$ret_array["uploaded"] && !is_writable(dirname($target)) ) {
			$ret_message = WFU_ERROR_ADMIN_DIR_PERMISSION;
		}
	}
	elseif ( $method == "ftp" &&  $ftpdata != "" ) {
		$result = false;
		$ftpdata_flat =  str_replace(array('\:', '\@'), array('\_', '\_'), $ftpdata);
		$pos1 = strpos($ftpdata_flat, ":");
		$pos2 = strpos($ftpdata_flat, "@");
		if ( $pos1 && $pos2 && $pos2 > $pos1 ) {
			$ftp_username = substr($ftpdata, 0, $pos1);
			$ftp_password = substr($ftpdata, $pos1 + 1, $pos2 - $pos1 - 1);
			list($ftp_host, $ftp_port) = explode(":", substr($ftpdata, $pos2 + 1));
			$conn_id = ftp_connect($ftp_host,$ftp_port);
			$login_result = ftp_login($conn_id, $ftp_username, $ftp_password);
			if ( $conn_id && $login_result ) {
				$flat_host = preg_replace("/^(.*\.)?([^.]*\..*)$/", "$2", $ftp_host);
				$pos1 = strpos($target, $flat_host);
				if ( $pos1 ) {
					if ( $passive == "true" ) ftp_pasv($conn_id, true);
//					$temp_fname = tempnam(dirname($target), "tmp");
//					move_uploaded_file($source, $temp_fname);
					$target = substr($target, $pos1 + strlen($flat_host.":".$ftp_port));
//					ftp_chmod($conn_id, 0755, dirname($target));
					$ret_array["uploaded"] = ftp_put($conn_id, $target, $source, FTP_BINARY);
					//apply user-defined permissions to file
					$fileperms = trim($fileperms);
					if ( strlen($fileperms) == 4 && sprintf("%04o", octdec($fileperms)) == $fileperms ) {
						$fileperms = octdec($fileperms);
						$fileperms = (int)$fileperms;
						ftp_chmod($conn_id, $fileperms, $target);
					}
//					ftp_chmod($conn_id, 0755, $target);
//					ftp_chmod($conn_id, $target_perms, dirname($target));
					unlink($source);
					if ( !$ret_array["uploaded"] ) {
						$ret_message = WFU_ERROR_ADMIN_DIR_PERMISSION;
					}
				}
				else {
					$ret_message = WFU_ERROR_ADMIN_FTPFILE_RESOLVE;
				}
			}
			else {
				$ret_message = WFU_ERROR_ADMIN_FTPINFO_INVALID;
			}
			ftp_quit($conn_id);
		}
		else {
			$ret_message = WFU_ERROR_ADMIN_FTPINFO_EXTRACT.$ftpdata_flat;
		}
	}
	else {
		$ret_message = WFU_ERROR_ADMIN_FTPINFO_INVALID;
	}

	$ret_array["admin_message"] = $ret_message;
	return $ret_array;
}

?>

The echos were my debug. Sorry, I guess I forgot them there.
Thank you,