CRM 2011 - Redeploying an existing organization - Part IV

Error 1642 reported by MsiInstallProduct - Setup cannot proceed because an error occured while copying installer files to the local system: The upgrade cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade may update a different version of the program. Verify that the program to be upgraded exists on your computer and that you have the correct upgrade.   (setup.cpp:CCrmSetup::CopyInstallerFiles:488). Setup cannot proceed because an error occured while copying installer files to the local system: The upgrade cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade may update a different version of the program. Verify that the program to be upgraded exists on your computer and that you have the correct upgrade.

So you run over by this problem while installing CRM 2011 Email Router.

I know it's a long and confusing message but don't worry - the only resolution for this problem is skip the "Update... (Recommended) on the first page of installer.

You bet!