Lotus iNotes ActiveX Installer is designed specifically for Domino servers.
Interim Fix for IBM Lotus iNotes 8.5.2 Fix Pack 2 ActiveX MSI installer is designed specifically for Domino servers running 8.5.2 FP2.
In Lotus Domino 8.5.2 Fix Pack 2 (FP2), the MSI installer for the Lotus iNotes ActiveX controls fails to install the correct components, though it appears to do so.