@samuyeah Your original nfo using <set> is the correct form for providing collection info. The agent supports both the old <set>Collection</set> style and the more recent
<set>
<name></name>
<overview></overview>
</set>
Unfortunately I don’t think anyone has worked out a way to load either the overview or a set poster yet.
I don’t use Tiny I prefer Ember Media Manager, but the nfo you have loaded looks like it should work. There is a library setting which controls whether collections are displayed or not. You can find it via Manage Library -> Edit -> Advanced. Just under DELETE PREVIEW THUMBNAILS should be collections, make sure this is not set to disabled.
If this isn’t the problem then unfortunately I am at a loss to understand why it will not work as there are no configuration options for the agent related to collections and your nfo looks valid.
Regarding multiple versions of the same film. Plex does not deal with this very well in my opinion. The problem to a great extent is that imdb treats them all as the same film and therefore so does Plex. There is a work around for this but it requires extra work. A good description of the solution can be found here https://forums.plex.tv/t/how-do-you-deal-with-multiple-versions-of-movies-specific-scenario/172051.
I would use Plex Movie for the primary version of the film and nfo for the special edition. You can get Plex Movie to use the nfo by putting the nfo client at the top of the Plex Movie agent configuration. The problem is if you have more versions of the film than you have agents then you run out of ways to separate the films. Well you could but you would have to clone the nfo agent so that you have multiple copies of it.
If you rely on the Plex method, which basically treats the different versions as the same then you cannot tell which versions you have watched and if you pause part way through then you have to be careful you pick the version you were watching as I am not sure you will get the same one if you simply use continue.
