System.InvalidOperationException: Handle is not initialized.

[Portalboy07]

Game: Danganronpa trigger havoc Anniversary edition {just to make it clear: that this is not the original game, but a unity remaster}
Bepinex build: IL2CPP-win-x64-6.0.0-be.733+995f049
Unity version: 2021.2.0f1 {game compiled with il2cpp}

The issue seems to be related to Il2CppInterop and unity version 2021.2.Xf1
It appears regardless of the bepinex version, or even the modloader itself.

Similar issue:
BepInEx/BepInEx#591

Log:
LogOutput.log

[toebeann]

Just thought I'd note that having spoken with this user, it seems some plugins e.g. UnityExplorer will be loaded, but they will not function properly and throw many errors.

The related issue linked is a different game, but also Unity 2021.2 and with same IL2CPP metadata version 29, so it seems this is not game specific, but perhaps Unity version specific?

[haolink]

I was having the same issue with Neptunia: Sisters vs Sisters which uses Unity 2021.2.5 - so it also matches the 2021.2.x issue. I'm currently testing a modified version of Il2CppInterop which should have this issue fixed. I forked it and you can check the fix in the following commit .

If you are still there - can you verify this as well. You need to build this fork, and copy Il2CppInterop.Runtime.dll into a BepInEx nightly. This should make it work with Unity 2021.2.x . I only have this game to test though.