Hello,

All the APIs listed in your errors are valid for the Vuforia Engine 8.0 SDK. Thus, it seems like there is some other issue at play here.

Here's our basic process for upgrading a Unity project:

1. Create a new, empty project
2. Activate Vuforia in the PlayerSettings, and import the latest VuforiaResources package (you can prompt this by creating an ARCamera in the scene)
   • This would be the point to perform the Vuforia Engine SDK upgrade if the version packaged with Unity is not the one you want
3. Import the content-based assets into the new project if you aren’t able to upgrade an older project directly
4. If there’s been API changes, then you may have to update the older project code to clear any compiler errors

The above steps are what we've followed internally when testing our core samples and have worked for us.

Thanks,

Vuforia Engine Support

Hi,

Vuforia 8 have some few more scripts files than the 7.5, check \Assets\Vuforia\Scripts folder for DefaultModelRecoEventHandler.cs

(should not be present in 7.5)

Also check inside Editor folder \Assets\Vuforia\Editor\Scripts for OpenSourceInitializer.cs

if your downgrade to 7.5 replace with the old one

Regards