I am trying to install sql server 2008 r2 sp1 , but the installation is failed and the log file in boot strap has an error like below
C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20111004_051552\Registry_SOFTWARE_Wow6432Node_Microsoft_Windows_CurrentVersion_Uninstall.reg_ 2011-10-04 05:16:23 Slp: Sco: Attempting to write hklm registry key SOFTWARE\Wow6432Node\Microsoft\MSSQLServer to file C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\20111004_051552\Registry_SOFTWARE_Wow6432Node_Microsoft_MSSQLServer.reg_ 2011-10-04 05:16:25 Slp: A failure was detected for a previous installation, patch, or repair for instance 'MSSQLSERVER' during configuration for features [MPT_AGENT_CORE_CNI,]. In order to apply this patch package (KB2528583), you must resolve any issues with the previous operation that failed. View the summary.txt log to determine why the previous operation failed.
Verified summary.txt but was unable to find the exact reason ...
does any know how to fix this