What is the current version of Ps (Help->System Info), if you have 18.104.22.168 already applied then you need to re-install Ps to get Ps 13.1.2.
As 13.1.2 is a subscription patch this would not get applied over 22.214.171.124.
If this still does not resolves your issue, Kindly mail me installer logs.
Program Fies(x86)\Common Files\Adobe\Installers
Please mail me @ firstname.lastname@example.org.
I'm seeing the lovely U44M1P7 error when trying to update Photoshop CS6 (v. 13.0.6) to 13.1.2. Can you tell me what I need to do to get it updated to the latest version?