During the installation of BPC 7 sp3, I was forced to stop the install. I stopped the install early on, when it was copying files. Now when I try installing, I no longer see "Install server on SQL Server 2008". Instead it shows a disabled option "Upgrade server on SQL Server 2008". I have deleted the BPC folder, I haven't found any keys in the registry under HKEY_LOCAL_MACHINE/Software, nothing in Component Services nor in C:\Windows\assembly. Does anyone have any experience or suggestions?