I got follow result:

------------

--SQL Server Mirror Setup Script - Step 1: Add Login For EndPoint

--Run On Principal Server

--Step 1 Start

USE [Master];

GO

IF NOT EXISTS (SELECT * FROM sys.server_principals WHERE name='spcph\algadmin')

BEGIN

CREATE LOGIN [asasa\admin] FROM WIND

and database mirroring doesn't work

on line 70: SET @Step1 = @Step1 + @NewLine + '

does it really need this quote ' ?