Celeste crashing upon launch

[vagrant owl]

When I launch Celeste the game crashes.

The crash log reads:

Ver 1.4.0.0-fna [Everest: 5617-azure-948d9]
06/30/2025 17:24:48
System.NullReferenceException: Object reference not set to an instance of an object.
at Celeste.Mod.GameHelper.Utils.MiscHooks.DialogClean(orig_Clean orig, String name, Language language) in X:\GameHelper\Utils\MiscHooks.cs:line 9
at Hook<System.String Celeste.Mod.GameHelper.Utils.MiscHooks::DialogClean(On.Celeste.Dialog+orig_Clean,System.String,Celeste.Language)>(String , Language )
at Celeste.Mod.VanillaEditHelper.VanillaEditHelperModule.DialogOnClean(orig_Clean orig, String name, Language language)
at Hook<System.String Celeste.Mod.VanillaEditHelper.VanillaEditHelperModule::DialogOnClean(On.Celeste.Dialog+orig_Clean,System.String,Celeste.Language)>(String , Language )
at Celeste.Mod.Spirialis.AuroraMoon.CustomGetDialog(orig_Clean orig, String name, Language language)
at Hook<System.String Celeste.Mod.Spirialis.AuroraMoon::CustomGetDialog(On.Celeste.Dialog+orig_Clean,System.String,Celeste.Language)>(String , Language )
at SyncProxy<System.String Celeste.Dialog:Clean(System.String, Celeste.Language)>(String , Language )
at Celeste.MainMenuClimb..ctor(Oui oui, Vector2 targetPosition, Vector2 tweenFrom, Action onConfirm)
at Celeste.OuiMainMenu.orig_CreateButtons()
at DMD<System.Void Celeste.OuiMainMenu:CreateButtons()>(OuiMainMenu this)
at Hook<System.Void Celeste.Mod.CollabUtils2.UI.InGameOverworldHelper::OnOuiMainMenuCreateButtons(On.Celeste.OuiMainMenu+orig_CreateButtons,Celeste.OuiMainMenu)>(OuiMainMenu )
at SyncProxy<System.Void Celeste.OuiMainMenu:CreateButtons()>(OuiMainMenu )
at Celeste.OuiMainMenu.Added(Scene scene)
at DMD<DMD<>?8373673::Monocle.EntityList::UpdateLists>(EntityList this)
at FrostHelper.Components.PostAwakeHook.EntityListOnUpdateLists(orig_UpdateLists orig, EntityList self)
at Hook<System.Void FrostHelper.Components.PostAwakeHook::EntityListOnUpdateLists(On.Monocle.EntityList+orig_UpdateLists,Monocle.EntityList)>(EntityList )
at SyncProxy<System.Void Monocle.EntityList:UpdateLists()>(EntityList )
at DMD<System.Void Celeste.OverworldLoader:LoadThread()>(OverworldLoader this)
at Celeste.Mod.SkinModHelper.LoaderHook.OverworldLoaderLoadThreadHook(orig_LoadThread orig, OverworldLoader self)
at Hook<System.Void Celeste.Mod.SkinModHelper.LoaderHook::OverworldLoaderLoadThreadHook(On.Celeste.OverworldLoader+orig_LoadThread,Celeste.OverworldLoader)>(OverworldLoader )
at SyncProxy<System.Void Celeste.OverworldLoader:LoadThread()>(OverworldLoader )
at Celeste.RunThread.RunThreadWithLogging(Action method)

Ver 1.4.0.0-fna [Everest: 5617-azure-948d9]
06/30/2025 17:24:48
System.InvalidOperationException: There is an error in XML document (1, 1).
---> System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderSaveData.Read22_SaveData()
at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
at Celeste.UserIO.Deserialize[T](Stream stream) in Celeste.Mod.mm/Patches/UserIO.cs:line 128
at Celeste.UserIO.orig_Load[T](String path, Boolean backup)

[floral jetty]

update all your mods

[vagrant owl]

I have but it still crashes

[floral jetty]

does the message at the top change then

[vagrant owl]

? The crash log is from after all my mods are up to date

[floral jetty]

what version is gamehelper then

[vagrant owl]

1.7.6.0

[floral jetty]

@limpid mural crash on either corrupted save or settings i think

what if you disable gamehelper then

[vagrant owl]

sure, I'll try disabling it, one sec

It launches fine with it disabled

[floral jetty]

okay so it is gamehelper

[limpid mural]

I have already added a null check that probably fixes that which will be published tomorrow

[floral jetty]

ah

thanks

[vagrant owl]

Oh, Cool

[vagrant owl]

Unfortunately the game still crashes after update :/

Ver 1.4.0.0-fna [Everest: 5617-azure-948d9]
07/02/2025 11:45:08
System.NullReferenceException: Object reference not set to an instance of an object.
at Celeste.Mod.GameHelper.Utils.Util.GetCelesteSaveName(Int32 slot) in X:\GameHelper\Utils\Util.cs:line 70
at Celeste.Mod.GameHelper.Features.MiscHooks.DialogClean(orig_Clean orig, String name, Language language) in X:\GameHelper\Features\MiscHooks.cs:line 10
at Hook<System.String Celeste.Mod.GameHelper.Features.MiscHooks::DialogClean(On.Celeste.Dialog+orig_Clean,System.String,Celeste.Language)>(String , Language )
at Celeste.Mod.Spirialis.AuroraMoon.CustomGetDialog(orig_Clean orig, String name, Language language)
at Hook<System.String Celeste.Mod.Spirialis.AuroraMoon::CustomGetDialog(On.Celeste.Dialog+orig_Clean,System.String,Celeste.Language)>(String , Language )
at SyncProxy<System.String Celeste.Dialog:Clean(System.String, Celeste.Language)>(String , Language )
at Celeste.MainMenuClimb..ctor(Oui oui, Vector2 targetPosition, Vector2 tweenFrom, Action onConfirm)
at Celeste.OuiMainMenu.orig_CreateButtons()
at DMD<System.Void Celeste.OuiMainMenu:CreateButtons()>(OuiMainMenu this)
at Hook<System.Void Celeste.Mod.CollabUtils2.UI.InGameOverworldHelper::OnOuiMainMenuCreateButtons(On.Celeste.OuiMainMenu+orig_CreateButtons,Celeste.OuiMainMenu)>(OuiMainMenu )
at SyncProxy<System.Void Celeste.OuiMainMenu:CreateButtons()>(OuiMainMenu )
at Celeste.OuiMainMenu.Added(Scene scene)
at DMD<DMD<>?30750038::Monocle.EntityList::UpdateLists>(EntityList this)
at FrostHelper.Components.PostAwakeHook.EntityListOnUpdateLists(orig_UpdateLists orig, EntityList self)
at Hook<System.Void FrostHelper.Components.PostAwakeHook::EntityListOnUpdateLists(On.Monocle.EntityList+orig_UpdateLists,Monocle.EntityList)>(EntityList )
at SyncProxy<System.Void Monocle.EntityList:UpdateLists()>(EntityList )
at DMD<System.Void Celeste.OverworldLoader:LoadThread()>(OverworldLoader this)
at Celeste.Mod.SkinModHelper.LoaderHook.OverworldLoaderLoadThreadHook(orig_LoadThread orig, OverworldLoader self)
at Hook<System.Void Celeste.Mod.SkinModHelper.LoaderHook::OverworldLoaderLoadThreadHook(On.Celeste.OverworldLoader+orig_LoadThread,Celeste.OverworldLoader)>(OverworldLoader )
at SyncProxy<System.Void Celeste.OverworldLoader:LoadThread()>(OverworldLoader )
at Celeste.RunThread.RunThreadWithLogging(Action method)

Ver 1.4.0.0-fna [Everest: 5617-azure-948d9]
07/02/2025 11:45:08
System.InvalidOperationException: There is an error in XML document (1, 1).
---> System.Xml.XmlException: '.', hexadecimal value 0x00, is an invalid character. Line 1, position 1.
at System.Xml.XmlTextReaderImpl.Throw(Exception e)
at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args)
at System.Xml.XmlTextReaderImpl.ParseRootLevelWhitespace()
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderSaveData.Read22_SaveData()
at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
--- End of inner exception stack trace ---
at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
at System.Xml.Serialization.XmlSerializer.Deserialize(Stream stream)
at Celeste.UserIO.Deserialize[T](Stream stream) in Celeste.Mod.mm/Patches/UserIO.cs:line 128
at Celeste.UserIO.orig_Load[T](String path, Boolean backup)

[floral jetty]

@limpid mural?

[limpid mural]

bruh

here is line 70
return (UserIO.Exists(s) ? UserIO.Load<SaveData>(s).Name : "") ?? "";

I guess it could be that User.Exists(s) is true but Load(s) is null? whatever sense that makes

[floral jetty]

does it crash without gamehelper

because it looks like it

[limpid mural]

probably

[floral jetty]

i think userio.exists literally checks if file.exists

[limpid mural]

I guess I can add a ? after Load(s)

ok, I did that (from my phone). I can publish it in the evening (or give you a test build)

[vagrant owl]

The game doesn't crash when I disable gamehelper

[floral jetty]

can you temporarily install celesterepl? i want to test something

[brave lichen]

https://gamebanana.com/mods/572844
(shared by @floral jetty)

SnipUndercover

CelesteREPL

i put c# in your celeste

Category

Other/Misc

Stats

:inbox_tray: 96 / :eye: 892 / :heart: 3

GameBanana · Feb 1, 2025, 9:45 PM

[vagrant owl]

ok

[floral jetty]

this lets you run c# code inside of celeste

do you have a corrupted savefile
somewhere?

and if so, which slot

[vagrant owl]

My slot 1 is corrupted

[floral jetty]

okay, you'll need to run UserIO.Exists(0) and UserIO.Load<SaveData>(0) is null

[vagrant owl]

sure

[limpid mural]

[floral jetty]

if you have any questions on how to actually run this then let me know

[vagrant owl]

It's says it cannot convert int to string

[floral jetty]

which one, first?

[floral jetty]

what is s?

[floral jetty]

oh its not supposed to be on the same line

[vagrant owl]

oh

[limpid mural]

it's a string that is either "debug" or the save file slot

[floral jetty]

remove the semicolons and put them one line at a time

[floral jetty]

i see

then yeah put "0" instead of 0

[limpid mural]

yes

[floral jetty]

yep @limpid mural

[floral jetty]

thank you for the tests

[vagrant owl]

np

[limpid mural]

ok, then my edit should fix it