After exporting and returning to the Nuendo interface, using the mouse to drag audio clips stops working (you can still move audio clips using Ctrl + arrow keys on the keyboard). Then, if you export the audio again and return to the Nuendo interface, the whole interface freezes and you can’t do anything. A freezedump appears in the CrashDumps folder. I’ve already uploaded the error file and can’t find any way to fix it.
Nuendo 15.0.30 64bit 2026.8.15 16.23.02.534-freezedump.dmp (1.3 MB)
System : windows 11 26200.9168
NV Driver: 610.88
Audio interface: AVID MBOX Studio
Nuendo: 15.0.3
Ok, this is a freeze in a library I haven’t seen before, so I’m doing some guessing here.
The fault is here
I had to lookup this DLL first, because I have not seen an issue with it so far. However, it is a Windows System library (usually in C:\Windows\System32) and it is a layer between the app and the WInRT/UWP interfaces somewhere in Windows.
So now here is my guessing. There seems to be a call into deep Windows that is waiting for some data to be returned and it might be related to the Audio part in your system.
In case you have Dolby Atmos aktive, try to disable it first. You can also try to disable Dolby Access in the Windows Audio settings and then see if that makes any difference.
I see also that the mboxaudioasio_x64.dll driver for your Audio interface is loaded. Make sure you have the latest available driver installed, or try to do the export without the Audio Interface connected.
Again, this is just guessing, you will get a definitely better idea if you open a support ticket with Steinberg and let them analyze the dump
I found a temporary fix using AI assistance. By running ‘regsvr32 ole32.dll’ in CMD to reset the OLE dynamic library registration, the problem gets fixed when opening Nuendo. However, it stops working the next time Nuendo is opened, and you have to reset the OLE dynamic library registration again to use it properly. I use Nuendo 14, and no matter how I export, it never causes mouse dragging to stop working in Nuendo. This problem only appears in Nuendo 15.
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* *
* Exception Analysis *
* *
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*** WARNING: Unable to verify checksum for reconform.dll
KEY_VALUES_STRING: 1
Key : Analysis.CPU.mSec
Value: 5890
Key : Analysis.Elapsed.mSec
Value: 17644
Key : Analysis.IO.Other.Mb
Value: 0
Key : Analysis.IO.Read.Mb
Value: 1
Key : Analysis.IO.Write.Mb
Value: 0
Key : Analysis.Init.CPU.mSec
Value: 578
Key : Analysis.Init.Elapsed.mSec
Value: 20783
Key : Analysis.Memory.CommitPeak.Mb
Value: 602
Key : Analysis.Version.DbgEng
Value: 10.0.29617.1000
Key : Analysis.Version.Description
Value: 10.2604.29.1 amd64fre
Key : Analysis.Version.Ext
Value: 1.2604.29.1
Key : Failure.Bucket
Value: BREAKPOINT_80000003_OneCoreUAPCommonProxyStub.dll!IModalWindow_Show_Proxy
Key : Failure.Exception.Code
Value: 0x80000003
Key : Failure.Hash
Value: {e2d173a5-1a5b-3616-37cd-12c9f966c341}
Key : Failure.ProblemClass.Primary
Value: BREAKPOINT
Key : Faulting.IP.Type
Value: Null
Key : Timeline.OS.Boot.DeltaSec
Value: 82806
Key : Timeline.Process.Start.DeltaSec
Value: 550
Key : WER.OS.Branch
Value: ge_release
Key : WER.OS.Version
Value: 10.0.26100.1
Key : WER.Process.Version
Value: 15.0.30.287
FILE_IN_CAB: Nuendo 15.0.30 64bit 2026.8.17 2.56.00.328-freezedump.dmp
EXCEPTION_RECORD: (.exr -1)
ExceptionAddress: 0000000000000000
ExceptionCode: 80000003 (Break instruction exception)
ExceptionFlags: 00000000
NumberParameters: 0
FAULTING_THREAD: 3bf8
PROCESS_NAME: Nuendo15.exe
ERROR_CODE: (NTSTATUS) 0x80000003 - { }
EXCEPTION_CODE_STR: 80000003
STACK_TEXT:
00000000`0015d658 00007ff9`c65d29f3 : 00000000`0015d790 00007ff9`c9320d29 00000000`00000048 00007ff9`c9324ffd : ntdll!NtWaitForMultipleObjects+0x14
00000000`0015d660 00007ff9`c8e247a4 : 00000041`4e125a96 00000000`495f26e0 00000000`fefda4a0 00000000`00000001 : KERNELBASE!WaitForMultipleObjectsEx+0x123
00000000`0015d950 00007ff9`c8e06464 : 00000000`04ef2849 00000000`00635cb0 00000000`00000000 00000000`00000000 : combase!MTAThreadWaitForCall+0xf4
(Inline Function) --------`-------- : --------`-------- --------`-------- --------`-------- --------`-------- : combase!MTAThreadDispatchCrossApartmentCall+0xca
(Inline Function) --------`-------- : --------`-------- --------`-------- --------`-------- --------`-------- : combase!CSyncClientCall::SwitchAptAndDispatchCall+0x4e1
00000000`0015da00 00007ff9`c8e00277 : 00000000`00000000 00000000`8d056b00 00000000`00000000 00000000`00635cb0 : combase!CSyncClientCall::SendReceive2+0x654
(Inline Function) --------`-------- : --------`-------- --------`-------- --------`-------- --------`-------- : combase!SyncClientCallRetryContext::SendReceiveWithRetry+0x2f
00000000`0015de10 00007ff9`c8dffcdf : 00000000`00635cb0 00000000`0015df40 00000000`8d056b00 00000000`495f26e0 : combase!CSyncClientCall::SendReceiveInRetryContext+0x5b
(Inline Function) --------`-------- : --------`-------- --------`-------- --------`-------- --------`-------- : combase!DefaultSendReceive+0x3c
00000000`0015de40 00007ff9`c8e1e9d3 : 00007ff9`b5c2a810 00007ff9`c8e1eeb7 00007ff9`b5a046c8 00000000`fcf73fd8 : combase!CSyncClientCall::SendReceive+0x1df
(Inline Function) --------`-------- : --------`-------- --------`-------- --------`-------- --------`-------- : combase!CClientChannel::SendReceive+0x49
00000000`0015dfb0 00007ff9`c7e07a91 : 00000000`00000000 00000000`00000000 00000000`8d056b00 00007ff9`c9089d20 : combase!NdrExtpProxySendReceive+0xb3
00000000`0015e000 00007ff9`c7e075fd : 00007ff9`b59f5c40 00000000`00000003 00007ff9`b5a046c8 00000000`00000000 : rpcrt4!NdrpClientCall3+0x431
00000000`0015e370 00007ff9`b580affe : 00000000`fcf73fd8 00000000`00000002 00000000`00000000 00000000`fcf73fd8 : rpcrt4!NdrClientCall3+0xed
00000000`0015e710 00000001`44c05b56 : 00000000`00000001 00000000`0015ea38 00000000`0015ea38 00000000`0015e810 : OneCoreUAPCommonProxyStub!IModalWindow_Show_Proxy+0x7e
00000000`0015e750 00000001`44c04e7c : 00000000`00000000 00000000`00000007 00000000`b2050310 00000000`001c0438 : Nuendo15+0x4c05b56
00000000`0015e7f0 00000001`44bf7b3f : 00000000`0015e810 00000001`44bf7b30 00000000`0015e818 00000000`006360d8 : Nuendo15+0x4c04e7c
00000000`0015e860 00000001`44ad886e : 00000000`0015ea38 00000000`00000000 00000000`00000000 00000000`0015e898 : Nuendo15+0x4bf7b3f
00000000`0015e890 00000001`42020e44 : 00000000`0263a9c0 00000000`0015eb90 00000000`0015e800 00000000`0015e901 : Nuendo15+0x4ad886e
00000000`0015eb70 00000001`4201faa9 : 00000001`04f375b0 00000000`0015ec20 00000000`ff0d60f0 00000000`0015f100 : Nuendo15+0x2020e44
00000000`0015ed10 00000001`42021d8c : 00000000`0015f100 00000000`00000000 00000001`46027258 00000001`00000001 : Nuendo15+0x201faa9
00000000`0015f090 00000001`429a63df : 00000000`8ce27500 00000000`00000000 00000000`00000000 00000000`00000000 : Nuendo15+0x2021d8c
00000000`0015f1c0 00000001`448ae447 : 00000000`0263ba80 00000000`9f9535d0 00000000`00000000 00000000`00000000 : Nuendo15+0x29a63df
00000000`0015f330 00000001`447acc4b : 00000000`00000001 00000000`8ce274a0 00000000`9f9535d0 00000000`00000000 : Nuendo15+0x48ae447
00000000`0015f370 00000001`448ae71e : 00000000`00000040 00000000`5a2e4310 00000000`00000000 00000000`8ce274a0 : Nuendo15+0x47acc4b
00000000`0015f3e0 00000001`4492155c : 00000000`fd166000 00000000`8ce274a0 00000000`00000000 00000000`004202a8 : Nuendo15+0x48ae71e
00000000`0015f460 00000001`44795648 : 00000000`fd166000 00000000`fd166000 000020fa`badf8a23 00000000`00110600 : Nuendo15+0x492155c
00000000`0015f490 00000001`4486b06a : 00000000`fd166000 00000000`6d308d80 0000000a`00000004 00000000`00000000 : Nuendo15+0x4795648
00000000`0015f520 00000001`44866513 : 00000000`6d308d00 00000000`0015f6c0 00000000`0015f671 00000000`00000000 : Nuendo15+0x486b06a
00000000`0015f5c0 00000001`4478494e : 00000000`f9128101 00000000`a8cf3310 00000000`f9128150 00000000`001c0438 : Nuendo15+0x4866513
00000000`0015f6c0 00000001`44c317f3 : 00000000`9b9dd000 00000000`00000000 00000000`00000000 00000001`44c2584e : Nuendo15+0x478494e
00000000`0015f720 00000001`44c3cb23 : 00000001`44c31780 00000000`00000000 00000000`001106cd 00000000`00000000 : Nuendo15+0x4c317f3
00000000`0015f780 00000001`44c3fa71 : 00000000`474cf010 00000000`a8cf3310 00000000`9b9dd000 00000000`00000000 : Nuendo15+0x4c3cb23
00000000`0015f830 00000001`44c3eb34 : 00000000`00000202 00000000`00000000 00000000`001106cd 00000000`001106cd : Nuendo15+0x4c3fa71
00000000`0015f920 00007ff9`c7edc366 : 00000000`00000000 00000000`0015fdb0 00000000`00000001 00000000`00000000 : Nuendo15+0x4c3eb34
00000000`0015f950 00007ff9`c7eda7bd : 00000000`006361f8 00000001`44c3eb10 00000000`001c0438 00000000`00000000 : user32!UserCallWinProcCheckWow+0x356
00000000`0015fab0 00000001`44c2395e : 00000000`006361f8 00000000`00636118 00000000`006361f8 00000000`00000000 : user32!DispatchMessageWorker+0x1dd
00000000`0015fb30 00000001`44c1440f : 00000000`006361f0 00000000`00636118 0000001c`000003f6 00000000`00000000 : Nuendo15+0x4c2395e
00000000`0015fba0 00000001`44c11f10 : 00000000`00636118 00000000`00000000 00000000`00000000 00000000`00000000 : Nuendo15+0x4c1440f
00000000`0015fbd0 00000001`44c11d8b : 00000000`00636118 00000000`00636118 00000000`00000000 00000000`47509170 : Nuendo15+0x4c11f10
00000000`0015fc30 00000001`4477dfa8 : 00000000`00000000 00000000`00636120 00000000`00000000 00000000`00000000 : Nuendo15+0x4c11d8b
00000000`0015fc80 00000001`43a8a3f6 : 00000000`0263ba80 00000000`0263ba80 00000000`0263bd08 00000000`0263bd40 : Nuendo15+0x477dfa8
00000000`0015fcb0 00000001`44dda5ce : 00000000`00000000 00000000`0015fcd8 00000000`0015fd18 00000000`0015fcd8 : Nuendo15+0x3a8a3f6
00000000`0015ff20 00007ff9`c826ccb7 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : Nuendo15+0x4dda5ce
00000000`0015ff60 00007ff9`c938ad6c : 00000000`00000000 00000000`00000000 000004f0`fffffb30 000004d0`fffffb30 : kernel32!BaseThreadInitThunk+0x17
00000000`0015ff90 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x2c
STACK_COMMAND: ~0s; .ecxr ; kb
SYMBOL_NAME: OneCoreUAPCommonProxyStub!IModalWindow_Show_Proxy+7e
MODULE_NAME: OneCoreUAPCommonProxyStub
IMAGE_NAME: OneCoreUAPCommonProxyStub.dll
FAILURE_BUCKET_ID: BREAKPOINT_80000003_OneCoreUAPCommonProxyStub.dll!IModalWindow_Show_Proxy
OS_VERSION: 10.0.26100.1
BUILDLAB_STR: ge_release
OSPLATFORM_TYPE: x64
OSNAME: Windows 10
IMAGE_VERSION: 10.0.26100.8972
FAILURE_ID_HASH: {e2d173a5-1a5b-3616-37cd-12c9f966c341}
Followup: MachineOwner
---------
Hope someone skilled can join in to figure out how to solve it.
Bug Specification for Nuendo 15.0.30 on Win11 Build 26200:
Trigger Condition: The initial IDropTarget handle registration during the first Export Audio Mixdown execution fails state transition due to OneCoreUAPCommonProxyStub!IModalWindow_Show_Proxy RPC deadlock in Windows 11 Build 26200, resulting in an unhandled invalid state.
Recovery Mechanism: Closing the project after the corrupted first export forces Nuendo’s ProjectContext destructor to destroy and cleanly re-register the global OLE IDropTarget instance.
Immunity State: Subsequent exports within the same Nuendo process session reuse the newly instantiated global OLE handle without triggering state-machine initialization, entirely bypassing the crash/freeze.
Product: Nuendo 15.0.30 (x64)
OS: Windows 11
Callstack Breakdown:
Plaintext
OneCoreUAPCommonProxyStub!IModalWindow_Show_Proxy+0x7e
rpcrt4!NdrClientCall3+0xed
combase!CSyncClientCall::SendReceive+0x1df
combase!MTAThreadWaitForCall+0xf4
ntdll!NtWaitForMultipleObjects+0x14
Summary: Nuendo15.exe main STA thread deadlocks in RPC synchronous call during IModalWindow_Show_Proxy modal execution on Windows 11 . The broken COM proxy stub fails to re-bind IDropTarget OLE handles upon modal closure, permanently breaking drag-and-drop until project reload.