现在win10上安装的2.7.11，现在想卸载掉，然后安装3.5.1，卸载2.7.11时提示无法卸载，求解... 提示如下：there is a problem with this windows installer package.A programe run as part of the setup did not finish as expected.Contact your support personnel or package vendor. 大家有没有遇到过这个问题的。一起研究一下。
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