Unity3D/Facebook SDK Login Failing

Logcat on the device shows this error: Permission Denial: get/set setting for user asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL

I added the permission to the AndroidManifest.xml with no luck. I've spent roughly four hours doing and redoing the Facebook app setup and configuration of the SDK in Unity3d. I'm hoping someone else has seen this issue and has an easy fix they know.

I downloaded and installed the SDK today, so it's current. I've been through the process of getting the hash with the keytool command (openssl installed). I'm just stumped as to what could be causing this weird issue.

Thank you in advance!