OK new user here, this is what steps I have followed so far:
1. Installed Unity 2018.2.10f1
2. Enabled Vuforia in XR settings
3. Enabled VR support and put Vuforia SDK at top of list
4. Imported VR+AR asset package from Unity store
I get this error:
Assets/Common/Scripts/CloudRecoEventHandler.cs(82,42): error CS1061: Type `Vuforia.ObjectTracker' does not contain a definition for `GetTargetFinder' and no extension method `GetTargetFinder' of type `Vuforia.ObjectTracker' could be found. Are you missing an assembly reference?
What am I missing?
It's quite a fail for a sample package. Anyway, preferably you would update to the new Vuforia:
Unity Editor -> Help -> Vuforia -> Check for Updates -> Install to "C:\Program Files\Unity 2018.x.y\"
or just replace GetTargetFinder<ImageTargetFinder>() with TargetFinder