rails2.3.3升级到3.0.7，`require': no such file to load -- script/../config/boot

ruby 1.9.2
rails 2.3.3 -> 3.0.7

ruby script/server 启动应用
出现错误：

<internal:lib/rubygems/custom_require>:29:in `require': no such file to load -- script/../config/boot (LoadError)
	from <internal:lib/rubygems/custom_require>:29:in `require'
	from script/server:2:in `<main>'

解决方法：
编辑script/server文件

require File.dirname(__FILE__) + '/../config/boot'

改成

require File.expand_path('../../config/boot', __FILE__)