win2008 r2 添加了Zend但是运行程序提示zend没有安装求助！

[fangsky]

环境：win2008 r2 +iis7.5+php5.2.17+zend Optimizer 1.3+mysql5.

phpinfo里看到信息如下：

This program makes use of the Zend Scripting Language Engine:
Zend Engine v2.2.0, Copyright (c) 1998-2010 Zend Technologies
    with XCache v1.3.2, Copyright (c) 2005-2011, by mOo
    with Zend Extension Manager v1.2.0, Copyright (c) 2003-2007, by Zend Technologies
    with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies

但是访问网站提示：
Zend Optimizer not installed.

请问这个会是什么原因，多谢了！

[蹲坑看月亮]

没安装

[fangsky]

看提示信息已经提示安装成功吧！！