Vault highlight not working in Inventor 2016.
The behaviour of picking a part/assy in the Inventor window and it highlighting (blue) in the Vault tree has changed between 2014 and 2016. To get the highlight to work first l switch to the Vault tree, then select a part/assy in Inventor, switch to the Model tree tab and then straight back to the Vault tree. The part is now selected. Repeat the workflow for other selections and highlighting. I used this feature to figure out parts/files to check out when I needed to make a change but because the behaviour has changed it is now more difficult.