You've hit the nail on the head, this is exactly what I'm after, thanks for introducing me to the line strip mesh node. Very interesting.

Try setting NImate to track multiple users. (Maybe I changed that after my first post). If you look at the Filter Skeleton node you can see it is set to track user number 1.

The thing is, the feedback loop doesn't become a deadlocked feedback loop until you add that cable. In your original composition, events are coming into the feedback loop through the SIZE node's Time port. When you attempt to connect the cable, events would be entering the feedback loop from a second point: the left Hold Value node's refresh port. At that moment it changes from an OK feedback loop to a deadlocked feedback loop.

As I mentioned on your other post, I think you can avoid the problem by getting rid of the left Hold Value node.

Regarding the crashes — It looks like at least some of them have to do with custom nodes you're working on. If you'd like help with those, please make a separate bug report to help us keep track, and send the subcomposition or node source code that's causing a problem.

Does Vuo consistently crash when you connect that cable? I tried several times, with and without the composition running, and couldn't get it to crash.