故障现象:
以前安装过该软件，但是卸载了之后再次安装的时候就有报错：
uh oh-bluestacks cannot be installed on this pc because you already have another program
that uses a "dock" (friendly control bar along the side of your screen) you"ll need to
uninstall this other program before bluestacks will install successfully email us at
support@bluestacks.com if you need any help thanks
原因分析:
之前卸载的不干净，删除之前残留的注册表项就可以了。
解决方案:
删除注册表[HKEY_CURRENT_USERSoftwareRocketDock]的所有项值，问题解决。
备注:
删除注册表操作有风险，请慎重操作。