We downloaded both X86 and X64 Microsoft Project (MSP) Integration versions for Clarity 15.9, and they are showing different versions.
It is a label bug or it has different versions and 32 bit package is missing in 15.9?
Release : 15.9
Component : Microsoft Project Integration for Clarity
x86 (32 bit) version of the MSP Interface
This is a typo in the version label, but the MSP x86 package is correctly for 15.9, so this label can be ignored.
When you install the x86 version for 15.9, in Programs and Features->Uninstall a Program, the MSP Interface version correctly displays as 15.9. This has also been validated by comparing the date of the files updated for 15.9 for both the x86 and x64 bit versions using the steps at: MSP Interface Patch Level - Determining which patch or version is Installed
The label has been corrected in 15.9.1 to correctly reflect it's for the 15.9.1 version.