Unhandled Exception | Nexus Mods | Page 1

green ferry Dec 17, 2025, 5:09 AM

System.NullReferenceException: Object reference not set to an instance of an object.
   at Noggog.BinaryReadStream..ctor(Stream stream, Int32 bufferSize, Boolean dispose, Boolean isLittleEndian)
   at Mutagen.Bethesda.Plugins.Binary.Headers.ModHeaderFrame.FromStream(Stream stream, ModKey modKey, GameRelease release, Boolean readSafe)
   at Mutagen.Bethesda.Plugins.Binary.Streams.ParsingMeta.Factory(BinaryReadParameters param, GameRelease release, ModKey modKey, Stream stream)
   at NexusMods.Games.CreationEngine.Fallout4.Fallout4.ParsePlugin(Hash hash, Nullable`1 name) in /_/src/NexusMods.Games.CreationEngine/Fallout4/Fallout4.cs:line 110
   at NexusMods.Games.CreationEngine.Fallout4.Fallout4.ParsePlugin(Hash hash, Nullable`1 name) in /_/src/NexusMods.Games.CreationEngine/Fallout4/Fallout4.cs:line 113
   at NexusMods.Games.CreationEngine.Emitters.MissingMasterEmitter.Diagnose(ReadOnly loadout, FrozenDictionary`2 syncTree, CancellationToken cancellationToken)+MoveNext() in /_/src/NexusMods.Games.CreationEngine/Emitters/MissingMasterEmitter.cs:line 50
   at NexusMods.DataModel.Diagnostics.DiagnosticManager.<>c__DisplayClass8_1.<<GetLoadoutDiagnostics>b__2>d.MoveNext() in /_/src/NexusMods.DataModel/Diagnostics/DiagnosticManager.cs:line 109
--- End of stack trace from previous location ---
   at NexusMods.DataModel.Diagnostics.DiagnosticManager.<>c__DisplayClass8_1.<<GetLoadoutDiagnostics>b__2>d.MoveNext() in /_/src/NexusMods.DataModel/Diagnostics/DiagnosticManager.cs:line 109

green ferry Dec 17, 2025, 5:37 AM

I can't even delete Fallout 4 from the My Games tab, I get the following error message

System.AggregateException: One or more errors occurred. (Cannot backup files, total size is 82.042 GB, which is larger than the maximum of 5 GB)
 ---> System.Exception: Cannot backup files, total size is 82.042 GB, which is larger than the maximum of 5 GB
   at NexusMods.Abstractions.Loadouts.Synchronizers.ALoadoutSynchronizer.ActionBackupNewFiles(GameInstallation installation, Dictionary`2 files) in /_/src/NexusMods.Abstractions.Loadouts.Synchronizers/ALoadoutSynchronizer.cs:line 1207
   at NexusMods.Abstractions.Loadouts.Synchronizers.ALoadoutSynchronizer.RunActions(Dictionary`2 syncTree, ReadOnly loadout, SynchronizeLoadoutJob job) in /_/src/NexusMods.Abstractions.Loadouts.Synchronizers/ALoadoutSynchronizer.cs:line 436
   at NexusMods.Abstractions.Loadouts.Synchronizers.ALoadoutSynchronizer.Synchronize(ReadOnly loadout, SynchronizeLoadoutJob job) in /_/src/NexusMods.Abstractions.Loadouts.Synchronizers/ALoadoutSynchronizer.cs:line 1006
   at NexusMods.DataModel.LoadoutManager.DeactivateCurrentLoadout(GameInstallation installation, CancellationToken cancellationToken) in /_/src/NexusMods.DataModel/LoadoutManager.cs:line 264
   at NexusMods.DataModel.LoadoutManager.<>c__DisplayClass15_0.<<UnManage>b__0>d.MoveNext() in /_/src/NexusMods.DataModel/LoadoutManager.cs:line 291
--- End of stack trace from previous location ---
   at NexusMods.Backend.Jobs.JobContext`2.Start() in /_/src/NexusMods.Backend/Jobs/JobContext.cs:line 63
   at NexusMods.DataModel.Synchronizer.SynchronizerService.UnManage(GameInstallation installation, Boolean runGc, Boolean cleanGameFolder) in /_/src/NexusMods.DataModel/Synchronizer/SynchronizerService.cs:line 134
   at NexusMods.App.UI.Pages.MyGames.MyGamesViewModel.RemoveGame(GameInstallation installation, Boolean shouldDeleteDownloads, ReadOnly[] filesToDelete, ReadOnly[] collections) in /_/src/NexusMods.App.UI/Pages/MyGames/MyGamesViewModel.cs:line 238
   at NexusMods.App.UI.Pages.MyGames.MyGamesViewModel.<>c__DisplayClass19_3.<<-ctor>b__15>d.MoveNext() in /_/src/NexusMods.App.UI/Pages/MyGames/MyGamesViewModel.cs:line 146
   --- End of inner exception stack trace ---

green ferry Dec 17, 2025, 5:56 AM

Getting the same sort of issues for BG3 and M&B2

I tried both uninstall methods and neither have worked.

#Unhandled Exception