including the one in your screen shot.
That's the Free Avid one that's automatically Installed via S16 Bonus Content Download / Installation. No Setup EXE File. Only an MSI Installer File. I've tested this by Removing it from ADD/REMOVE Programs. It then shows as not Installed in S16 Install Manager ( As per my previous Screenshot), I then re-selected it / Install. It then showed as Installed & in REMOVE/ADD PROGRAMS.
I did also have the Pinnacle Studio Version showing in ADD/REMOVE Programs as a separate item. I Removed it for Testing. It no longer shows in S12, although all the S16 Avid Bonus Content does. I never purchased it in the first place. So I don't know how it was installed into S12. It may be that it was also Free with Avid Studio 1, which is no longer Installed.
Please confirm, to ensure we're both on the same track
;
1) The Serial number / Activation Key you're entering when you Install the purchased Version.
2). Does the purchased Version show in S12 Help / "View Activation Keys". If-so, do the Activation Keys match.
3) Does it show in ADD/REMOVE Programs
4) Are you looking in the right place in S12; Titles Drop-down
5) If it does show, what Error are you getting when Opening it in the Album.
Since it's a Title & it's available in S16, I'd be inclined to create the Project in S12 without the Title & then Import that into S16. Bearing in mind that S16 Project won't be backwards-compatible with S12. You'd need to finish the Project in S16.
ADDED - Jeff & I Posting @ same time. Read his Post above, first.