Camtool 2 doesn't appear in app list, game version 1.16.4.
Tried installing via Content Manager, also tried manually installing, moved the folder around to and from Apps, Mods and the base game directory, and lastly tried applying the patch created by ktulu77, nothing made the app show up.
I suspect it needs an update as previous versions have also catered to the 1.X.1,2,3,4 standard, this says it's for 1.16 as opposed to 1.16.4 and the first parts of the description say it will need an update for every game update.