升级到Xcode 4.5提示: “does not have access to iOS 5.1 simulator”

Question

是不是免费用户升级到4.5就没法安装5.1的模拟器了，一安装就提示"doesnothaveaccesstoiOS5.1simulator"有没有同学最近遇到跟我一样的问题？！