Error: Another version of this product is already installed. Installation of this version cannot continue. - when upgrading the Raiser's Edge

When upgrading the Raiser's Edge, users may receive the following Windows Installer error:

  • Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel. 
Run setup.exe instead of "The Raiser's Edge msi" to complete the upgrade.
 

Environment

 Windows 7 (32-bit);Windows 7 (64-bit);Windows Server 2008 (32-bit);Windows Server 2008 (64-bit);Windows Server 2008 R2;Windows Server 2012;Windows Server 2012 R2

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