Cubase 15.0.30 constant crashes with FabFilter VST3 plugins

bigbing · June 3, 2026, 4:45pm

The error message I get is:

A serious problem has occurred in the following file:
C:\Program Files\Common Files\VST3\FabFilter Pro-Q4.vst3

Cubase 15.0.30 64bit has become unstable. Try to save your
project under a new name to keep any unsaved changes, and
restart Cubase 15.0.30 64bit.

If the problem persists, proceed as follows:
Check the file information above to determine which
component caused the problem.
Contact Steinberg Technical Support or, if the problem was
caused by a third-party plug-in, the manufacturer of the
plug-in. Please provide a description of the actions that led to
the problem. Please also include the following file:
C:/Users/User/Documents/Steinberg/CrashDumps/Cubase
15.0.30 64bit2026.6.3 15.38.42.158.dmp

It happens randomly, sometimes when I click on the track that uses the plugin, sometimes when doing something completely unrelated to those plugins in my project.
I’m unable to work because of this, has anyone else encountered something similar?
I’m on Windows 11.

Reco29 · June 3, 2026, 5:03pm

No problems here.
Recently, there have been some updates by Fabfilter. Did you install them?

bigbing · June 3, 2026, 8:17pm

Updated the plugins just now, the error that referenced the FabFilter plugin directly is gone, now another, basically the same error with different “code” appears:

A serious problem has occurred in the following file:

C:\WINDOWS\SYSTEM32\ntdll.dll

Cubase 15.0.30 64bit has become unstable. Try to save your
project under a new name to keep any unsaved changes, and
restart Cubase 15.0.30 64bit.

If the problem persists, proceed as follows:
Check the file information above to determine which
component caused the problem.
Contact Steinberg Technical Support or, if the problem was
caused by a third-party plug-in, the manufacturer of the
plug-in. Please provide a description of the actions that led to
the problem. Please also include the following file:
C:/Users/User/Documents/Steinberg/CrashDumps/Cubase
15.0.30 64bit2026.6.3 22.14.23.703.dmp

Reco29 · June 3, 2026, 8:22pm

Hi, can you upload the dmp file here? Maybe it has nothing to do with Fabfilter.

This specific error can have a variety of reasons. Maybe, the dmp will give you a hint where to start.

bigbing · June 3, 2026, 9:29pm

Here’s the analysis of the .dmp file copied from WinDbg:

DEBUG_FLR_EXCEPTION_CODE(c0000374) and the ".exr -1" ExceptionCode(c0000005) don't match

KEY_VALUES_STRING: 1

    Key  : AV.Type
    Value: Read

    Key  : Analysis.CPU.mSec
    Value: 1015

    Key  : Analysis.Elapsed.mSec
    Value: 27571

    Key  : Analysis.IO.Other.Mb
    Value: 71

    Key  : Analysis.IO.Read.Mb
    Value: 1

    Key  : Analysis.IO.Write.Mb
    Value: 99

    Key  : Analysis.Init.CPU.mSec
    Value: 250

    Key  : Analysis.Init.Elapsed.mSec
    Value: 41190

    Key  : Analysis.Memory.CommitPeak.Mb
    Value: 240

    Key  : Analysis.Version.DbgEng
    Value: 10.0.29547.1002

    Key  : Analysis.Version.Description
    Value: 10.2602.27.2 amd64fre

    Key  : Analysis.Version.Ext
    Value: 1.2602.27.2

    Key  : Failure.Bucket
    Value: HEAP_CORRUPTION_c0000005_Cubase15.exe!Unknown

    Key  : Failure.Exception.Code
    Value: 0xc0000374

    Key  : Failure.Exception.IP.Address
    Value: 0x7ff823446ae1

    Key  : Failure.Exception.IP.Module
    Value: ntdll

    Key  : Failure.Exception.IP.Offset
    Value: 0x26ae1

    Key  : Failure.Hash
    Value: {1291cd33-d5c7-2a7e-8cf4-d4350777ba7e}

    Key  : Failure.ProblemClass.Primary
    Value: HEAP_CORRUPTION

    Key  : Faulting.IP.Type
    Value: Paged

    Key  : Timeline.OS.Boot.DeltaSec
    Value: 212076

    Key  : Timeline.Process.Start.DeltaSec
    Value: 160

    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:  Cubase 15.0.30 64bit2026.6.3 22.14.23.703.dmp

CONTEXT:  (.ecxr)
rax=41352c56414a90d6 rbx=000000005878d528 rcx=0000000003bc0000
rdx=0000000000003bc0 rsi=00000002dc73cbd0 rdi=00000002e23c07d0
rip=00007ff823446ae1 rsp=000000000015edc0 rbp=000000000015f0b0
 r8=00000000eb953bb4  r9=0000000000000060 r10=0000000000540000
r11=00007ff808c62936 r12=0000000000000000 r13=0000000000000000
r14=0000000000000038 r15=400968c540fff1cb
iopl=0         ov up ei pl nz na po nc
cs=0033  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010a02
ntdll!RtlFreeHeap+0xf1:
00007ff8`23446ae1 488b08          mov     rcx,qword ptr [rax] ds:41352c56`414a90d6=????????????????
Resetting default scope

EXCEPTION_RECORD:  (.exr -1)
ExceptionAddress: 00007ff823446ae1 (ntdll!RtlFreeHeap+0x00000000000000f1)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000000
   Parameter[1]: ffffffffffffffff
Attempt to read from address ffffffffffffffff

PROCESS_NAME:  Cubase15.exe

READ_ADDRESS:  ffffffffffffffff 

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

EXCEPTION_CODE_STR:  c0000005

EXCEPTION_PARAMETER1:  0000000000000000

EXCEPTION_PARAMETER2:  ffffffffffffffff

ADDITIONAL_DEBUG_TEXT:  Enable Pageheap/AutoVerifer

FAULTING_THREAD:  a294

STACK_TEXT:  
00000000`00000000 00000000`00000000 Cubase15.exe!heap_corruption+0x0
00000000`00000000 00000000`00000000 unknown![~0s]+0x0
00000000`0015edc0 00007ff8`23446ae1 ntdll!RtlFreeHeap+0x0
00000000`0015eeb0 00007ff8`2106e0fb ucrtbase!free_base+0x0
00000000`0015eee0 00000001`436b2a7b Cubase15+0x0
00000000`0015ef20 00000001`436b2c18 Cubase15+0x0
00000000`0015ef50 00000001`436b14bc Cubase15+0x0
00000000`0015ef80 00000001`436ab98e Cubase15+0x0
00000000`0015efb0 00000001`436a6479 Cubase15+0x0
00000000`0015f180 00000001`436a56be Cubase15+0x0
00000000`0015f1b0 00000001`435c2cd9 Cubase15+0x0
00000000`0015f2f0 00000001`4467ed8a Cubase15+0x0
00000000`0015f320 00000001`444fad2e Cubase15+0x0
00000000`0015f370 00000001`4467e11c Cubase15+0x0
00000000`0015f420 00000001`44681e30 Cubase15+0x0
00000000`0015f450 00000001`44b1a624 Cubase15+0x0
00000000`0015f480 00000001`44b07a70 Cubase15+0x0
00000000`0015f4b0 00000001`44b33da1 Cubase15+0x0
00000000`0015f950 00007ff8`230bc396 user32!UserCallWinProcCheckWow+0x0
00000000`0015fab0 00007ff8`230ba7ed user32!DispatchMessageWorker+0x0
00000000`0015fb30 00000001`44b18d9e Cubase15+0x0
00000000`0015fba0 00000001`44b0984f Cubase15+0x0
00000000`0015fbd0 00000001`44b07350 Cubase15+0x0
00000000`0015fc30 00000001`44b071cb Cubase15+0x0
00000000`0015fc80 00000001`4467c838 Cubase15+0x0
00000000`0015fcb0 00000001`4394f569 Cubase15+0x0
00000000`0015ff20 00000001`44ccc10e Cubase15+0x0
00000000`0015ff60 00007ff8`2288e957 kernel32!BaseThreadInitThunk+0x0
00000000`0015ff90 00007ff8`2342427c ntdll!RtlUserThreadStart+0x0


STACK_COMMAND: ** Pseudo Context ** Pseudo ** Value: ffffffff ** ; kb

IP_IN_PAGED_CODE: 
ntdll!RtlFreeHeap+f1
00007ff8`23446ae1 488b08          mov     rcx,qword ptr [rax]

SYMBOL_NAME:  Cubase15+36b2a7b

MODULE_NAME: Cubase15

IMAGE_NAME:  Cubase15.exe

FAILURE_BUCKET_ID:  HEAP_CORRUPTION_c0000005_Cubase15.exe!Unknown

OS_VERSION:  10.0.26100.1

BUILDLAB_STR:  ge_release

OSPLATFORM_TYPE:  x64

OSNAME:  Windows 10

IMAGE_VERSION:  15.0.30.287

FAILURE_ID_HASH:  {1291cd33-d5c7-2a7e-8cf4-d4350777ba7e}

Followup:     MachineOwner
---------

bigbing · June 4, 2026, 7:38am

I’ve opened the project this morning and FabFilter Pro L2 crashed again, so it’s not fixed by updating the plugins, here’s the .dmp log:

KEY_VALUES_STRING: 1

    Key  : AV.Type
    Value: Read

    Key  : Analysis.CPU.mSec
    Value: 421

    Key  : Analysis.Elapsed.mSec
    Value: 1386

    Key  : Analysis.IO.Other.Mb
    Value: 4

    Key  : Analysis.IO.Read.Mb
    Value: 1

    Key  : Analysis.IO.Write.Mb
    Value: 5

    Key  : Analysis.Init.CPU.mSec
    Value: 296

    Key  : Analysis.Init.Elapsed.mSec
    Value: 8458

    Key  : Analysis.Memory.CommitPeak.Mb
    Value: 243

    Key  : Analysis.Version.DbgEng
    Value: 10.0.29547.1002

    Key  : Analysis.Version.Description
    Value: 10.2602.27.2 amd64fre

    Key  : Analysis.Version.Ext
    Value: 1.2602.27.2

    Key  : Failure.Bucket
    Value: INVALID_POINTER_READ_c0000005_FabFilter_Pro-L_2.vst3!Unknown

    Key  : Failure.Exception.Code
    Value: 0xc0000005

    Key  : Failure.Exception.IP.Address
    Value: 0x8eed76f9

    Key  : Failure.Exception.IP.Module
    Value: FabFilter_Pro_L_2

    Key  : Failure.Exception.IP.Offset
    Value: 0x176f9

    Key  : Failure.Hash
    Value: {319f804f-7295-031e-c57e-5c771fc727e0}

    Key  : Failure.ProblemClass.Primary
    Value: INVALID_POINTER_READ

    Key  : Faulting.IP.Type
    Value: Paged

    Key  : Timeline.OS.Boot.DeltaSec
    Value: 252834

    Key  : Timeline.Process.Start.DeltaSec
    Value: 4477

    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:  Cubase 15.0.30 64bit2026.6.4 9.33.40.518.dmp

CONTEXT:  (.ecxr)
rax=0000000000001800 rbx=000000008dbbc3c0 rcx=0000000000000000
rdx=0000000000000000 rsi=00000002108ecd10 rdi=bb29e200bb272600
rip=000000008eed76f9 rsp=000000006934eb80 rbp=0000000000001800
 r8=0000000000000080  r9=0000000000000080 r10=000000008eec0000
r11=000000008effbcc9 r12=00000000cb5aa3e0 r13=000000008d9eb5c0
r14=00000000cb5aa300 r15=0000000000000000
iopl=0         nv up ei pl zr na pe nc
cs=0033  ss=002b  ds=002b  es=002b  fs=0053  gs=002b             efl=00010246
FabFilter_Pro_L_2+0x176f9:
00000000`8eed76f9 f77f24          idiv    eax,dword ptr [rdi+24h] ds:bb29e200`bb272624=????????
Resetting default scope

EXCEPTION_RECORD:  (.exr -1)
ExceptionAddress: 000000008eed76f9 (FabFilter_Pro_L_2+0x00000000000176f9)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000000
   Parameter[1]: ffffffffffffffff
Attempt to read from address ffffffffffffffff

PROCESS_NAME:  Cubase15.exe

READ_ADDRESS:  ffffffffffffffff 

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s.

EXCEPTION_CODE_STR:  c0000005

EXCEPTION_PARAMETER1:  0000000000000000

EXCEPTION_PARAMETER2:  ffffffffffffffff

STACK_TEXT:  
00000000`6934eb80 00000000`8efa764a     : 00000002`108ecd10 00000000`00000080 00000000`00000200 00000000`8efb8ddb : FabFilter_Pro_L_2+0x176f9
00000000`6934ebc0 00000000`8efca746     : 00000000`00000080 00000000`775faa40 00000000`001895f5 00000000`00000400 : FabFilter_Pro_L_2!VSTPluginMain+0x2a23a
00000000`6934ec20 00000000`8efb8d9d     : 00000000`775fd3d0 00000000`001895f5 00000000`00000400 00000000`cb47c270 : FabFilter_Pro_L_2!VSTPluginMain+0x4d336
00000000`6934ec70 00000000`8efca72b     : 00000000`001895f5 00000000`90acb130 00000000`775fd3d0 00000000`8efb8a20 : FabFilter_Pro_L_2!VSTPluginMain+0x3b98d
00000000`6934ecb0 00000000`8efb8d9d     : 00000000`77600850 00000000`001895f5 00000000`00000400 00000000`cb663340 : FabFilter_Pro_L_2!VSTPluginMain+0x4d31b
00000000`6934ed00 00000000`8efb4912     : 00000000`cb47b4f0 00000000`77600850 00000000`c96856b8 80000000`80000000 : FabFilter_Pro_L_2!VSTPluginMain+0x3b98d
00000000`6934ed40 00000000`8efb8d9d     : 00000000`78569710 00000000`cb47b4f0 80000000`00000400 00000000`77600000 : FabFilter_Pro_L_2!VSTPluginMain+0x37502
00000000`6934ee10 00000000`8efcb038     : 00000000`001895f5 00000000`77600000 00000000`7e2b9c90 80000000`80000000 : FabFilter_Pro_L_2!VSTPluginMain+0x3b98d
00000000`6934ee50 00000000`8efcaf93     : 80000000`80000000 80000000`80000000 80000000`80000000 80000000`80000000 : FabFilter_Pro_L_2!VSTPluginMain+0x4dc28
00000000`6934eea0 00000000`8efb6b92     : 00000000`7e2b9c90 00000000`00000400 00000000`6934fc90 00000000`c9b9e5d0 : FabFilter_Pro_L_2!VSTPluginMain+0x4db83
00000000`6934eed0 00000000`8efca72b     : 00000002`00000005 80000000`80000020 40f77000`00000400 80000000`00000002 : FabFilter_Pro_L_2!VSTPluginMain+0x39782
00000000`6934ef70 00000000`8efb6b92     : 00000000`8e309c90 00000000`001895f5 00000000`c9d2cbf0 00000000`001895f5 : FabFilter_Pro_L_2!VSTPluginMain+0x4d31b
00000000`6934efc0 00000000`8efb4769     : 00000000`cb479a80 00000000`a97819d0 00000000`00000400 00000000`cb4799f0 : FabFilter_Pro_L_2!VSTPluginMain+0x39782
00000000`6934f060 00000000`8ef9c352     : 00000000`7e4cc9a0 00000000`cb47c480 00000000`00000400 00000000`7e4cc9a0 : FabFilter_Pro_L_2!VSTPluginMain+0x37359
00000000`6934f130 00000000`8efca746     : 00000000`775fff90 00000000`00000400 00000000`775fff90 00000000`6934f3c0 : FabFilter_Pro_L_2!VSTPluginMain+0x1ef42
00000000`6934f160 00000000`8efb8d9d     : 00000000`775f87b0 00000000`001895f5 00000000`00000400 00000000`775f5090 : FabFilter_Pro_L_2!VSTPluginMain+0x4d336
00000000`6934f1b0 00000000`8efb6b92     : 00000000`001895f5 00000000`001895f5 00000000`775f87b0 00000000`00000000 : FabFilter_Pro_L_2!VSTPluginMain+0x3b98d
00000000`6934f1f0 00000000`8efa0322     : 00000000`c9641b30 00000000`c9f557f0 00000000`00000400 00000000`775f4060 : FabFilter_Pro_L_2!VSTPluginMain+0x39782
00000000`6934f290 00000000`8efca746     : 00000000`c9641b30 00000000`00000400 00000000`00000000 00000000`7e11e040 : FabFilter_Pro_L_2!VSTPluginMain+0x22f12
00000000`6934f2c0 00000000`8efc90ba     : 00000000`8d64f3b0 00000000`00000400 00000000`001895f5 00000000`00000000 : FabFilter_Pro_L_2!VSTPluginMain+0x4d336
00000000`6934f310 00000000`8efcb038     : 00000000`00000400 00000000`8d64f3b0 00000000`c9641d40 00000000`00000100 : FabFilter_Pro_L_2!VSTPluginMain+0x4bcaa
00000000`6934f360 00000000`8efcaf93     : 00000000`00000000 00000000`00009fe0 00000000`00000800 00000001`439d39ee : FabFilter_Pro_L_2!VSTPluginMain+0x4dc28
00000000`6934f3b0 00000000`8efbeb2d     : 00000000`c9641d40 00000000`00000100 00000000`cbe17f00 00000001`42c4f48b : FabFilter_Pro_L_2!VSTPluginMain+0x4db83
00000000`6934f3e0 00000000`8efb6b92     : 00000000`5cc21740 00000000`001895f5 00000000`00000100 00000001`42bc8c6d : FabFilter_Pro_L_2!VSTPluginMain+0x4171d
00000000`6934f430 00000000`8efcb038     : 00000000`00000000 00000000`00000000 00000000`00000100 00000000`00000000 : FabFilter_Pro_L_2!VSTPluginMain+0x39782
00000000`6934f4d0 00000000`8efcaf93     : 00000000`6934f840 00000000`00000000 00000002`3f800000 00000000`00000001 : FabFilter_Pro_L_2!VSTPluginMain+0x4dc28
00000000`6934f520 00000000`8efc90ba     : 00000000`cb084c20 00000000`001895f5 00000000`00000000 00000000`00009fe0 : FabFilter_Pro_L_2!VSTPluginMain+0x4db83
00000000`6934f550 00000000`8efc90ba     : 00000000`001895f5 00000000`cb084c20 00000000`cb084f78 00000000`00009fe0 : FabFilter_Pro_L_2!VSTPluginMain+0x4bcaa
00000000`6934f5a0 00000000`8efb6b92     : 00000000`00000100 00000000`001895f5 00000000`cb084f78 00000000`00000000 : FabFilter_Pro_L_2!VSTPluginMain+0x4bcaa
00000000`6934f5f0 00000000`8efca72b     : 00000000`00000001 00000000`c9b94440 00000000`00000100 00007ffe`fa6c1ad4 : FabFilter_Pro_L_2!VSTPluginMain+0x39782
00000000`6934f690 00000000`8ef5c3ef     : 00000000`c9d54220 00000000`001895f5 00000000`00000000 00000000`a9781d20 : FabFilter_Pro_L_2!VSTPluginMain+0x4d31b
00000000`6934f6e0 00000000`8ef5a231     : 00000000`a9781880 00000000`00000000 00000000`00000100 00000000`cad49a30 : FabFilter_Pro_L_2+0x9c3ef
00000000`6934f730 00000000`8ef5c096     : 00000000`00000000 00000000`00000100 00000000`cad49b01 00000000`6934f8e0 : FabFilter_Pro_L_2+0x9a231
00000000`6934f7c0 00000000`8ef75efd     : 00000000`00009f00 00000000`6934f9e0 00000000`00000000 00007ffe`fa6eceb3 : FabFilter_Pro_L_2+0x9c096
00000000`6934f890 00000001`42c01ac9     : 00000000`5c9142c0 00000000`c91f9f90 00000000`00000000 00000000`00000004 : FabFilter_Pro_L_2+0xb5efd
00000000`6934fb40 00000001`436edef9     : 00000000`00000100 00000000`cb6dd008 00000000`7fa9c460 00000000`77bc8fc0 : Cubase15+0x2c01ac9
00000000`6934fb80 00000001`436fdaea     : 42ecbe67`1fc7e000 00000000`7e399110 3fc2a9a4`85cd7b90 00000000`00000000 : Cubase15+0x36edef9
00000000`6934fc90 00000001`43718e25     : 00000000`00000000 00000000`7e2a3af0 00000000`7e122db0 00000000`7e10d2f0 : Cubase15+0x36fdaea
00000000`6934fcc0 00000001`437118f0     : 00000000`7e2a3a00 00000000`01418400 00000000`5d226b00 80000000`00000000 : Cubase15+0x3718e25
00000000`6934fd70 00000001`4369a953     : 0000e5f4`2165ab20 00000000`ce0a26f0 0000e5f4`2165ae40 00000001`4461dbe0 : Cubase15+0x37118f0
00000000`6934fdb0 00000001`436b77f2     : 00000000`5d226b80 00000000`01418400 00000000`5d226b80 00000000`5d2357d8 : Cubase15+0x369a953
00000000`6934fe30 00000001`44c90b88     : 00000000`00000000 00000000`00000000 00000000`00000000 00007ff8`08bc29cc : Cubase15+0x36b77f2
00000000`6934fe60 00000001`4462140b     : 00000000`78523748 00000000`78523748 00000000`00000000 00000000`00000000 : Cubase15+0x4c90b88
00000000`6934fed0 00000001`44622b1e     : 00000000`78523748 00000000`785235b0 00000000`00000000 00000000`00000000 : Cubase15+0x462140b
00000000`6934ff00 00007ff8`2288e957     : 00000000`785235b0 00000000`00000000 00000000`00000000 00000000`00000000 : Cubase15+0x4622b1e
00000000`6934ff60 00007ff8`2342427c     : 00000000`00000000 00000000`00000000 000004f0`fffffb30 000004d0`fffffb30 : kernel32!BaseThreadInitThunk+0x17
00000000`6934ff90 00000000`00000000     : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x2c


IP_IN_PAGED_CODE: 
FabFilter_Pro_L_2+176f9
00000000`8eed76f9 f77f24          idiv    eax,dword ptr [rdi+24h]

SYMBOL_NAME:  FabFilter_Pro_L_2+176f9

MODULE_NAME: FabFilter_Pro_L_2

IMAGE_NAME:  FabFilter Pro-L 2.vst3

STACK_COMMAND: ~153s; .ecxr ; kb

FAILURE_BUCKET_ID:  INVALID_POINTER_READ_c0000005_FabFilter_Pro-L_2.vst3!Unknown

OS_VERSION:  10.0.26100.1

BUILDLAB_STR:  ge_release

OSPLATFORM_TYPE:  x64

OSNAME:  Windows 10

IMAGE_VERSION:  2.2.6.42

FAILURE_ID_HASH:  {319f804f-7295-031e-c57e-5c771fc727e0}

Followup:     MachineOwner