iTunes删除后重装不能，求破
手贱把iTunes删了，下了最新版，结果提示The installer encountered errors before iTunes could be configured.
Errors occurred during installation. Your system has not been modified.
按照apple support页上的提示把和apple沾边的东西包括quicktime都删光了，清了注册表
还是安装不能
只好求助S1万能
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