Changing AMS material selection while printer is printing leads to a crash #1678

New Issue

MrUnknownDE · 2026-04-05T19:05:43+02:00

MrUnknownDE commented

2026-04-05 19:05:43 +02:00

Originally created by @ansonl on 11/7/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2-dev

Operating System (OS)

Windows

OS Version

Windows 10

Additional system information

No response

Printer

P1S with AMS

How to reproduce

The printer must be printing. I am using P1S firmware 01.08.01.00 with "legacy network plugin".
Go to Devices tab
Click a filament slot in the AMS (not the 1 slot for directly feeding)
Select any filament
Click OK button

If the printer is not printing, the filament is changed and no crash.

I reverted #11261 and got the same crash behavior, so the crash was introduced before that change.
I reverted up to #10780 339636b91f with git reset --hard 339636b91fb438b97bd3fd1c8b1746621a5a8c80 and still got the crash so I think Bambu's H2 changes are causing the crash.
I can't build after reverting to the next previous commit 9510b1a930 due to a cmake error so I can't test if that previous commit is working or not.

Actual results

OrcaSlicer crashes with ACCESS_VIOLATION in HMS.cpp

Exceptions:

Exception Code :c0000005 ACCESS_VIOLATION

Exception Flag :0x0 NumberParameters :2 
Param 0 :0x0 
Param 1 :0xc0 
Context :000000D69B4FFE00 
ContextFlag : 0x10005f, EFlags: 0x10202 
Fault address:  0xA4BC28DF 0x1:0x118DF C:\Windows\SYSTEM32\MSVCP140.dll


Registers:

RAX:0000000000007E24

RBX:00000000000000C0

RCX:00000000000000C0

RDX:0000000000000000

RSI:7FFFFFFFFFFFFFFF

RDI:0000000000000000

R8:000000D69B500910

R9:000000D69B500950

R10:00007FF9A4E50000

R11:8101010101010100

R12:0000000000000000

R13:00000000000000C0

R14:0000000000000000

R15:000002BEE044FF10

CS:RIP:0033:00007FF9A4BC28DF

SS:RSP:002B:000000D69B5005B0  RBP:000000D69B500699

DS:002B  ES:002B  FS:0053  GS:002B

Flags:00010202



Show CallStack:
7ff9a4bc28df:std::_Rng_abort [Unknown file][-1]
7ff89869cf27:Slic3r::GUI::HMSQuery::init_hms_info [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\HMS.cpp][587]
7ff898695ea5:Slic3r::GUI::HMSQuery::_is_internal_error [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\HMS.cpp][394]
7ff89869d753:Slic3r::GUI::HMSQuery::is_internal_error [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\HMS.cpp][509]
7ff89822fc61:Slic3r::MachineObject::add_command_error_code_dlg [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\DeviceManager.cpp][5310]
7ff89825153d:Slic3r::MachineObject::parse_json [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\DeviceManager.cpp][2969]
7ff8980d82cc:<lambda_0d3288baf315cbe2977e61c44f003f78>::operator() [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\GUI_App.cpp][1884]
7ff899893bec:wxEvtHandler::TryHereOnly [Unknown file][-1]
7ff89989334b:wxEvtHandler::ProcessEvent [Unknown file][-1]
7ff89989360b:wxEvtHandler::ProcessPendingEvents [Unknown file][-1]
7ff899895f4b:wxAppConsoleBase::ProcessPendingEvents [Unknown file][-1]
7ff8998d14d4:wxEventLoopManual::DoRun [Unknown file][-1]
7ff8998d173a:wxEventLoopBase::Run [Unknown file][-1]
7ff8998958e1:wxAppConsoleBase::MainLoop [Unknown file][-1]
7ff8998982d3:wxEntryReal [Unknown file][-1]
7ff8998f9018:wxEntry [Unknown file][-1]
7ff8980c051c:Slic3r::GUI::GUI_Run [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\GUI_Init.cpp][64]
7ff8975f3a0e:Slic3r::CLI::run [C:\Users\ansonl\development\OrcaSlicer\src\OrcaSlicer.cpp][1306]
7ff89767a85c:orcaslicer_main [C:\Users\ansonl\development\OrcaSlicer\src\OrcaSlicer.cpp][7368]
7ff7954d56bc:wWinMain [C:\Users\ansonl\development\OrcaSlicer\src\OrcaSlicer_app_msvc.cpp][308]
7ff7954d5cb6:__scrt_common_main_seh [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl][288]
7ff9bfa77374:BaseThreadInitThunk [Unknown file][-1]
7ff9c009cc91:RtlUserThreadStart [Unknown file][-1]

Logical Address:
0xA4BC28DF 0x1:0x118DF C:\Windows\SYSTEM32\MSVCP140.dll
0x9869CF27 0x1:0x25CBF27 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x98695EA5 0x1:0x25C4EA5 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x9869D753 0x1:0x25CC753 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x9822FC61 0x1:0x215EC61 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x9825153D 0x1:0x218053D C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x980D82CC 0x1:0x20072CC C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x99893BEC 0x1:0x37C2BEC C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x9989334B 0x1:0x37C234B C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x9989360B 0x1:0x37C260B C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x99895F4B 0x1:0x37C4F4B C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x998D14D4 0x1:0x38004D4 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x998D173A 0x1:0x380073A C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x998958E1 0x1:0x37C48E1 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x998982D3 0x1:0x37C72D3 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x998F9018 0x1:0x3828018 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x980C051C 0x1:0x1FEF51C C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x975F3A0E 0x1:0x1522A0E C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x9767A85C 0x1:0x15A985C C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll
0x954D56BC 0x1:0x46BC C:\Users\ansonl\development\OrcaSlicer\build\src\Release\orca-slicer.exe
0x954D5CB6 0x1:0x4CB6 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\orca-slicer.exe
0xBFA77374 0x1:0x16374 C:\Windows\System32\KERNEL32.DLL
0xC009CC91 0x1:0x4BC91 C:\Windows\SYSTEM32\ntdll.dll

Expected results

Filament selection is changed on the device and OrcaSlicer does not crash.

Project file & Debug log uploads

crash_Thu_Nov_06_20_32_20_0.log

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @ansonl on 11/7/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2-dev ### Operating System (OS) Windows ### OS Version Windows 10 ### Additional system information _No response_ ### Printer P1S with AMS ### How to reproduce 1. The printer must be printing. I am using P1S firmware 01.08.01.00 with "legacy network plugin". 2. Go to Devices tab 3. Click a filament slot in the AMS (not the 1 slot for directly feeding) 4. Select any filament 5. Click OK button If the printer is not printing, the filament is changed and no crash. I reverted #11261 and got the same crash behavior, so the crash was introduced before that change. I reverted up to #10780 339636b91fb438b97bd3fd1c8b1746621a5a8c80 with `git reset --hard 339636b91fb438b97bd3fd1c8b1746621a5a8c80` and still got the crash so I think Bambu's H2 changes are causing the crash. I can't build after reverting to the next previous commit 9510b1a9301892f89ed92d782129516fe9379e8e due to a cmake error so I can't test if that previous commit is working or not. ### Actual results OrcaSlicer crashes with ACCESS_VIOLATION in `HMS.cpp` ``` Exceptions: Exception Code :c0000005 ACCESS_VIOLATION Exception Flag :0x0 NumberParameters :2 Param 0 :0x0 Param 1 :0xc0 Context :000000D69B4FFE00 ContextFlag : 0x10005f, EFlags: 0x10202 Fault address: 0xA4BC28DF 0x1:0x118DF C:\Windows\SYSTEM32\MSVCP140.dll Registers: RAX:0000000000007E24 RBX:00000000000000C0 RCX:00000000000000C0 RDX:0000000000000000 RSI:7FFFFFFFFFFFFFFF RDI:0000000000000000 R8:000000D69B500910 R9:000000D69B500950 R10:00007FF9A4E50000 R11:8101010101010100 R12:0000000000000000 R13:00000000000000C0 R14:0000000000000000 R15:000002BEE044FF10 CS:RIP:0033:00007FF9A4BC28DF SS:RSP:002B:000000D69B5005B0 RBP:000000D69B500699 DS:002B ES:002B FS:0053 GS:002B Flags:00010202 Show CallStack: 7ff9a4bc28df:std::_Rng_abort [Unknown file][-1] 7ff89869cf27:Slic3r::GUI::HMSQuery::init_hms_info [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\HMS.cpp][587] 7ff898695ea5:Slic3r::GUI::HMSQuery::_is_internal_error [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\HMS.cpp][394] 7ff89869d753:Slic3r::GUI::HMSQuery::is_internal_error [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\HMS.cpp][509] 7ff89822fc61:Slic3r::MachineObject::add_command_error_code_dlg [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\DeviceManager.cpp][5310] 7ff89825153d:Slic3r::MachineObject::parse_json [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\DeviceManager.cpp][2969] 7ff8980d82cc:<lambda_0d3288baf315cbe2977e61c44f003f78>::operator() [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\GUI_App.cpp][1884] 7ff899893bec:wxEvtHandler::TryHereOnly [Unknown file][-1] 7ff89989334b:wxEvtHandler::ProcessEvent [Unknown file][-1] 7ff89989360b:wxEvtHandler::ProcessPendingEvents [Unknown file][-1] 7ff899895f4b:wxAppConsoleBase::ProcessPendingEvents [Unknown file][-1] 7ff8998d14d4:wxEventLoopManual::DoRun [Unknown file][-1] 7ff8998d173a:wxEventLoopBase::Run [Unknown file][-1] 7ff8998958e1:wxAppConsoleBase::MainLoop [Unknown file][-1] 7ff8998982d3:wxEntryReal [Unknown file][-1] 7ff8998f9018:wxEntry [Unknown file][-1] 7ff8980c051c:Slic3r::GUI::GUI_Run [C:\Users\ansonl\development\OrcaSlicer\src\slic3r\GUI\GUI_Init.cpp][64] 7ff8975f3a0e:Slic3r::CLI::run [C:\Users\ansonl\development\OrcaSlicer\src\OrcaSlicer.cpp][1306] 7ff89767a85c:orcaslicer_main [C:\Users\ansonl\development\OrcaSlicer\src\OrcaSlicer.cpp][7368] 7ff7954d56bc:wWinMain [C:\Users\ansonl\development\OrcaSlicer\src\OrcaSlicer_app_msvc.cpp][308] 7ff7954d5cb6:__scrt_common_main_seh [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl][288] 7ff9bfa77374:BaseThreadInitThunk [Unknown file][-1] 7ff9c009cc91:RtlUserThreadStart [Unknown file][-1] Logical Address: 0xA4BC28DF 0x1:0x118DF C:\Windows\SYSTEM32\MSVCP140.dll 0x9869CF27 0x1:0x25CBF27 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x98695EA5 0x1:0x25C4EA5 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x9869D753 0x1:0x25CC753 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x9822FC61 0x1:0x215EC61 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x9825153D 0x1:0x218053D C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x980D82CC 0x1:0x20072CC C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x99893BEC 0x1:0x37C2BEC C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x9989334B 0x1:0x37C234B C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x9989360B 0x1:0x37C260B C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x99895F4B 0x1:0x37C4F4B C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x998D14D4 0x1:0x38004D4 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x998D173A 0x1:0x380073A C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x998958E1 0x1:0x37C48E1 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x998982D3 0x1:0x37C72D3 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x998F9018 0x1:0x3828018 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x980C051C 0x1:0x1FEF51C C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x975F3A0E 0x1:0x1522A0E C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x9767A85C 0x1:0x15A985C C:\Users\ansonl\development\OrcaSlicer\build\src\Release\OrcaSlicer.dll 0x954D56BC 0x1:0x46BC C:\Users\ansonl\development\OrcaSlicer\build\src\Release\orca-slicer.exe 0x954D5CB6 0x1:0x4CB6 C:\Users\ansonl\development\OrcaSlicer\build\src\Release\orca-slicer.exe 0xBFA77374 0x1:0x16374 C:\Windows\System32\KERNEL32.DLL 0xC009CC91 0x1:0x4BC91 C:\Windows\SYSTEM32\ntdll.dll ``` ### Expected results Filament selection is changed on the device and OrcaSlicer does not crash. ### Project file & Debug log uploads [crash_Thu_Nov_06_20_32_20_0.log](https://github.com/user-attachments/files/23423802/crash_Thu_Nov_06_20_32_20_0.log) ### Checklist of files to include - [x] Log file - [ ] Project file ### Anything else? _No response_

MrUnknownDE closed this issue

2026-04-05 19:05:43 +02:00

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Reference: github/OrcaSlicer#1678