Browse to the file \IsahSetup_4_5_Isah\[UPDATEPACKNO]_[VERSIONNO]\Client_Software\Crystal_Reports_Runtime\CR10Runtime.msi and double-click this file to start the Crystal Runtime installation. Follow the instructions on you screen to help you through the install process.
If prompted, restart your computer.
You do not have to install any software patches. The patches are only intended for use with Crystal Reports Designer.