Skipping prerequisities when installing PerformancePoint 2007 SP2

While installing the SP2 of PerformancePoint 2007, you may get an error like; Failed package requirement analysis, please refer to the log file for more information. This can be avoided by setting the SKIPREQCHECK as true with msiexec command. But you have remember one thing, when we install the product we use i switch but p switch has to be used when installing service packs. Please see the code below; Installing the product, skipping the prerequisites; msiexec /i PSCSrv.msi SKIPREQCHECK=1 Installing the service pack, skipping the prerequisities; msiexec /p PSCSrv.msi SKIPREQCHECK=1