I'm having a little trouble working out how to get the Unity Playfab, Party, and Xbox Live Helper library to play together on Xbox. I believe I've got login working using the Xbox Live Helper Library. When I moved on to try to mirror my MPSD session to a Party multiplayer session (via PlayFab.Party.PlayFabMultiplayerManager), I got a warning that I had failed to configure my Title ID in the PlayfabSharedSettings. I had indeed missed that step, but when I configured it properly, XBLSDK.PartyXblInitialize stopped succeeding. Instead it returns error 0x5000, the human readable version of which is "only one instance of PartyXblManager can exist at a time". Are both of these systems performing the same initialization in some way? It doesn't look like I can excise the XBLSDK.PartyXblInitialize call - subsequent calls to the Xbox Live Helper Library don't succeed.