Rise of the Tomb Raider seems to be another victim of recent updates adding openvr_api.dll to it’s directory. This disables steamvr access somehow.
Unlike with the Source games, removing the dll in this case refuses to launch the game at all. Again, probably something to look into if this trend among games continues.
Fortunately, I encountered a workaround from a post mentioning that RotTR is one of the few games on steam that lets you roll back to previous game versions. I gave this a try and it seems to work just fine.
Right click the game in steam for properties, go to Betas tab, and choose a build (I chose recommended 753.2).
After a quick update (that also happens to remove that pesky dll), vorpX should hook fine.
Hopefully the new TR coming this week will work ok. Looking forward to it.