Stability: GM crashed when editing my room and now says that some plugin signatures are not valid #16297

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1. github-project-automation

   added this to Team Workloadon Oct 25, 2026
2. gm-bug-reporter

   added the

   Crash

   issue type on Oct 25, 2026
3. github-project-automation

   moved this to Triage in Team Workloadon Oct 25, 2026
4. YYDan commented on Oct 26, 2026

   

   YYDan

   on Oct 26, 2026

   Last edited by YYDan

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   ui.log says the IDE failed to verify the plugins were correct and so it restarted in an attempt to fix (can see this several times over the last fewe IDE starts):

   [14:10:20:342(ac51)] Exception thrown while loading assembly: ObjectEditor, Version=0.0.0.0, Culture=neutral, PublicKeyToken=83c29ed24e39e35e - The signature is incorrect.

   [14:10:20:343(ac51)] No IPlugin attributes were found in the assembly ObjectEditor.
   [14:10:20:363(ac51)] Failed loading plugin ObjectEditor 2026.0.16
   [14:10:20:364(ac51)] Failed loading our plugins. Aborting.
   [14:10:20:405(ac51)] LoadingState: LoadingError
   [14:10:20:420(ac51)] Initializing package sources and bundled packages...
   [14:10:20:440(ac51)] Setting up package sources from config (6 source configs)...
   [14:10:20:443(ac51)] Source 'GMRT': generated 12 scopes from template
   [14:10:20:445(ac51)] Source 'Languages': generated 2 scopes from template
   [14:10:20:446(ac51)] Source 'Prefabs': using 1 explicit scopes
   [14:10:20:446(ac51)] Source 'IDE Prefabs': using 1 explicit scopes
   [14:10:20:446(ac51)] Source 'GM Tools': using 1 explicit scopes
   [14:10:20:447(ac51)] Source 'Localisation': using 1 explicit scopes
   [14:10:20:452(ac51)] Source setup complete: 6 added, 0 skipped
   [14:10:20:496(ac51)] Package sources initialized: 6 sources, 56 bundled packages
   [14:10:28:278(ac51)] IDE Exiting: bLogout=False:ForceLogoutOnExit=False:m_isRestarting=True:pcount=1:m_isUpdating=False
   [14:10:28:330(ac51)] Deleting temp directory C:\Users\Owner\AppData\Local\GameMakerStudio2-LTS2026\GMS2TEMP
   [14:10:28:514(ac51)] Finding processes spawned by process with Id [4932]
   [14:10:28:645(ac51)] Killing [1] processes spawned by process with Id [4932]
   [14:10:28:803(8d9a)] ************************************** 10/25/2026 **************************************

   However, I suspect the real problem is that the GM install has been corrupted, as if you scroll up further in the log you can see all of these errors started after this one:

   [14:08:34:111(7286)] ####################################
   [14:08:34:112(7286)] Break in PrintException (YYDebug:73)
   [14:08:34:113(7286)] Reason: Exception - GUIBase.Destroy
   [14:08:34:114(7286)] ####################################
   [14:08:34:115(7286)] GUIBase.Destroy: System.BadImageFormatException: Bad binary signature. (0x80131192)
   at YoYoStudio.GUI.Gadgets.InheritedVariableTableRow.Destroy()
   at YoYoStudio.GUI.GUIBase.Destroy() [Destroy, D:\a\YoYoStudio\YoYoStudio\YoYoStudio\IDE\Core\IDE\GUI\GUIBase.cs, 2574]

   And there is yet another crash higher up again - this time for a GPU driver memory problem when pasting items in the Room Editor:

   [14:08:13:696(7286)] DoUndoableAction: 'Paste Room Item(s)'
   [14:08:25:550(7286)] DoUndoableAction: 'Paste Room Item(s)'
   [14:08:31:393(7286)] FNA-Error: Vertex buffer creation failed! Error Code: The GPU will not respond to more commands, most likely because of an invalid command passed by the calling application. (0x887A0006)
   [14:08:31:434(7286)] MQTT - Received msg: GameMaker/event/ide_unstable/error_info = Emergency Restart: Vertex buffer creation failed! Error Code: The GPU will not respond to more commands, most likely because of an invalid command passed by the calling application. (0x887A0006)
   [14:08:31:443(7286)] MQTT - Received msg: GameMaker/event/end_session/duration = 118
   [14:08:31:445(7286)] MQTT - Received msg: GameMaker/event/end_session/restart = true
   [14:08:31:445(7286)] MQTT - Received msg: GameMaker/event/end_session/run_windows = 17
   [14:08:31:446(7286)] MQTT - Received msg: GameMaker/event/end_session/total_vm = 16
   [14:08:31:447(7286)] GUIBase::Draw - YoYoStudio.GUI.Gadgets.ScrollPanel no parent window workspace tab: shoal_2 parents: RoomItemGadget('RoomItemGadget') RoomItemListBox ScrollPanel('list_cell')clipRect: 0, 0, 90, 33
   exception: Attempting to update VertexBuffer which is in an incomplete state
   [14:08:31:448(7286)] MQTT - Received msg: GameMaker/event/end_session/session_time = 58
   [14:08:31:449(7286)] MQTT - Received msg: GameMaker/event/end_session/total_debug = 1
   [14:08:31:455(7286)] at YoYoStudio.Graphics.VertexBuffer.Update(VertexData _srcdata)
   at YoYoStudio.Graphics.VertexManager.Flush()
   at YoYoStudio.Graphics.Scene.PopClipRect(Int32 _count)
   at YoYoStudio.GUI.GUIBase.Draw(TimeSpan _deltaTime, RenderEvent _renderEvent, Boolean _performViewCheck)

   [14:08:31:465(7286)] IDE Exiting: bLogout=False:ForceLogoutOnExit=False:m_isRestarting=True:pcount=1:m_isUpdating=False
5. YYDan commented on Oct 26, 2026

   

   YYDan

   on Oct 26, 2026

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   We'll of course see if there's something we can do to catch and prevent these errors, but I'd recommend checking your OS permissions are correct and then reinstalling GameMaker just now. There is certainly no need to send us any more duplicate bug reports for this ;)

   As I say, you need to review our Permissions wiki page and follow the steps there.

   Note that we always link to this guide on the release notes page and it's on the Help menu inside GameMaker itself, as many users need to review their protection settings every time they install a new version of GameMaker - so this may be something you need to do in future also.
6. YYDan

   marked Hey, can you please fix this? #16298 as a duplicate of this issue on Oct 26, 2026
7. YYDan

   changed the title [-]hey fix this bug right now please i just want to work on a project dont interrupt ok please god.[/-] [+]Stability: GM crashed when editing my room and now says that some plugin signatures are not valid[/+] on Oct 26, 2026
8. jackerley

   assigned

   stuckie

   on Oct 26, 2026
9. jackerley

   moved this from Triage to Backlog in Team Workloadon Oct 26, 2026