6.53 Really Unstable > ZPlane problem

Since updating to C6.53 (both 32 & 64 bit under Windows 7 64 bit) I’ve found it to be really really unstable - crashing out of the blue with a “Cubase has stopped working” box.
After analysing the Cubase crash dmp files with WinDbg I managed to ascertain that the fault lies with “zplanelibs.dll” - responsible for elastic audio etc:

  •                                                                         *
  •                    Exception Analysis                                   *
  •                                                                         *

000007fe`f7547094 4c8b4c0ae8 mov r9,qword ptr [rdx+rcx-18h]

EXCEPTION_RECORD: ffffffffffffffff – (.exr 0xffffffffffffffff)
ExceptionAddress: 000007fef7547094 (zplanelibs!CSOLOISTPitchAnalysisIf_Dll_DestroyInstance+0x0000000000075f44)
ExceptionCode: c0000005 (Access violation)
ExceptionFlags: 00000000
NumberParameters: 2
Parameter[0]: 0000000000000000
Parameter[1]: 000000008469fff8
Attempt to read from address 000000008469fff8


PROCESS_NAME: Cubase6.exe

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

EXCEPTION_PARAMETER1: 0000000000000000

EXCEPTION_PARAMETER2: 000000008469fff8

READ_ADDRESS: 000000008469fff8

000007fe`f7547094 4c8b4c0ae8 mov r9,qword ptr [rdx+rcx-18h]


FAULTING_THREAD: 0000000000001a1c



LAST_CONTROL_TRANSFER: from 000007fef74d8cb7 to 000007fef7547094

0000000018a7f168 000007fef74d8cb7 : 0000000000000001 00000000770cc123 0000000000000068 0000000141333f46 : zplanelibs!CSOLOISTPitchAnalysisIf_Dll_DestroyInstance+0x75f44
0000000018a7f170 000000014004043b : 0000000000000000 0000000000000000 0000000000053fac 000000008cf26fc0 : zplanelibs!CSOLOISTPitchAnalysisIf_Dll_DestroyInstance+0x7b67
0000000018a7f4c0 0000000140039742 : 000000003f7a0000 0000000000000181 000000008d3399c0 0000000018a7f5d8 : Cubase6+0x4043b
0000000018a7f570 0000000140216c3f : 0000000000000181 0000000003e4f350 000000008e7f6c30 0000000000000000 : Cubase6+0x39742
0000000018a7f5c0 00000001400c47ae : 0000000000000000 0000000000000000 000000008eebe090 0000000000000000 : Cubase6+0x216c3f
0000000018a7f710 0000000140216d8a : 0000000000000000 0000000100000181 0000000054933560 0000000018a7f898 : Cubase6+0xc47ae
0000000018a7f810 0000000140e7c213 : 0000000000000000 0000000049034a28 000000006bf1d214 000000000049a8be : Cubase6+0x216d8a
0000000018a7f960 0000000140e7ebc8 : 0000000049033900 000000000049a7e5 000000000049bbe5 000000004bcb1c10 : Cubase6+0xe7c213
0000000018a7fb00 0000000140e7ed53 : 0000000049033900 0000000000001400 40b4000000000000 000000004bcb1c10 : Cubase6+0xe7ebc8
0000000018a7fd30 0000000140de26bf : 0000000049034a70 0000000000001400 000000000000e560 0000000000015888 : Cubase6+0xe7ed53
0000000018a7fd70 0000000140de2dff : 0000000049034a70 0000000049034a80 0000000000666bab 000000000000e560 : Cubase6+0xde26bf
0000000018a7fe30 0000000140e43c6e : 0000000049034a80 0000000000651323 000000007c9344a0 0000000013d34e00 : Cubase6+0xde2dff
0000000018a7fea0 0000000140e43d01 : 0000000000666bab 00000000006677ab 000000000064ff23 00000000006657ab : Cubase6+0xe43c6e
0000000018a7ff00 0000000141349ddb : 000000001398af10 0000000000000000 0000000010e1c6c0 0000000000000000 : Cubase6+0xe43d01
0000000018a7ff30 000000007709652d : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : Cubase6+0x1349ddb
0000000018a7ff60 00000000771cc521 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : kernel32!BaseThreadInitThunk+0xd
0000000018a7ff90 0000000000000000 : 0000000000000000 0000000000000000 0000000000000000 0000000000000000 : ntdll!RtlUserThreadStart+0x1d


SYMBOL_NAME: zplanelibs!CSOLOISTPitchAnalysisIf_Dll_DestroyInstance+75f44


MODULE_NAME: zplanelibs

IMAGE_NAME: zplanelibs.dll


STACK_COMMAND: ~11s; .ecxr ; kb

FAILURE_BUCKET_ID: INVALID_POINTER_READ_c0000005_zplanelibs.dll!CSOLOISTPitchAnalysisIf_Dll_DestroyInstance

BUCKET_ID: X64_APPLICATION_FAULT_INVALID_POINTER_READ_zplanelibs!CSOLOISTPitchAnalysisIf_Dll_DestroyInstance+75f44

WATSON_STAGEONE_URL: http://watson.microsoft.com/StageOne/Cubase6_exe/6_5_3_153/5008296a/zplanelibs_dll/0_0_0_0/4f1ee15e/c0000005/00077094.htm?Retriage=1

Followup: MachineOwner

I’ve never had any problems with Cubase before - but right now its just unusable for me.
Can I revert to an earlier version of zplanelibs.dll - maybe from 6.51 - as a temporary work around?
Please help!

Scrap that - seems like exactly the same zplane versions in 6.51 and 6.53 - which is weird as 6.51 was rock solid for me. I guess I’ll just roll-back until this gets resolved.

Hi Graham,

please get in contact with the support team:


Please add a step-by-step guide and the the Cubase Project.
The error message just shows the last process before the crash and maybe it does not point directly to the causing process.

Best regards,


Thanks for the reply Marcus - yep I’ll get in touch with support.
Fwiw I’ve narrowed it down further and it is definitely zplane’s elastic audio routines which are crashing Cubase 6.53 here - I’ve got a particular project here now which 100% always crashes at exactly the same spot, just as its about to play an audio file which has been z-plane stretched. This is a test project that’s merely streaming raw audio without using any VST plugins, just some z-plane strectches, and with all VST plugins removed from their install folders, so none are iniated on startup. It crashes both 32bit and 64bit C6.53 at exactly the same spot100% of the time. If I go in and disable the stretching on those parts then the project plays fine with no issues.
I’ll send this project to support.

Im not sure about that zplane. Mac version of 6.5.3 is also more unstable than 6.5.0.

Yes, it is…
For me it crashes a lot on launch…

6.5.1 was extremely stable for me but am having lots of crashes now. Cant get to the root of a trigger but its definitely less stable for my Windows 7 Installation.

Can someone point me to the way to roll back versions?

Can someone point me to the way to roll back versions?

Go to your Windows add/remove programs, tick the show updates option and uninstall the last update.