Definitely appreciate the report! We checked the differences between the 105 and 107 plugin installers and there were no changes to the Photoshop install portion: they are identical in 105 and 107. So I don't understand how 105 could have detected/installed the plugins for PS but 107 doesn't. Must be something really odd like a difference in the state of your machine (anti-virus software interference is a possibility I suppose).
If they bring back The Twilight Zone show, this might be a good plot for a new episode.
Mike