Failure to calculate the default value
I was installing SQL Server SP1 on a one node cluster (long story) and I got this error “There was a failure to calculate the default value of setting PatchResult.”
It turns out when I launched SQLServer2012SP1-KB2674319-x64-ENU.exe, it put the temporary folder–you know xcdswer-wersdf-weradf on a drive in the cluster. The patch restarted the sql server service rendering the drive from which the service pack was trying to install unavailable. I copied the temp folder to the local c: drive and I was able to install with no problems.