# FMOD\_Studio\_VCA\_SetVolume

**URL:** <https://qa.fmod.com/t/fmod-studio-vca-setvolume/15961>\
**Category:** FMOD Engine\
**Tags:** cpp\
**Created:** [July 10, 2020, 11:49am UTC](https://qa.fmod.com/t/fmod-studio-vca-setvolume/15961 "2020-07-10T11:49:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![niking](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@niking](https://qa.fmod.com/u/niking)\
**Post date:** [July 10, 2020, 11:49am UTC](https://qa.fmod.com/t/fmod-studio-vca-setvolume/15961/1 "2020-07-10T11:49:45Z")

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I would like to ask for your assistance in debugging a rare occurring crash for our live players. We are unable to reproduce these crashes unfortunately and are using the C++ API with FMOD version 2.00.08. They look like null pointer exceptions, here are the callstacks reported from our internal tool:

FATAL EXCEPTION at 0x00007FFD29373DCB  
Violation when reading address 0x48  
Code: 0xc0000005  
Stack Trace:  
at memset (0x00007ffd62c22f80)  
at RtlRaiseException (0x00007ffd62be9e70)  
at FMOD5\_System\_Update (0x00007ffd29314df0)  
at FMOD5\_System\_Update (0x00007ffd29314df0)  
at FMOD5\_System\_Update (0x00007ffd29314df0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007ffd2939e7e0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007ffd2939e7e0)  
at FMOD5\_System\_Update (0x00007ffd29314df0)  
at FMOD5\_System\_Update (0x00007ffd29314df0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007ffd2939e7e0)  
at BaseThreadInitThunk (0x00007ffd60d67bc0)  
at RtlUserThreadStart (0x00007ffd62bece30)

FATAL EXCEPTION at 0x00007FFE0CF445BC  
Violation when reading address 0x218  
Code: 0xc0000005  
Stack Trace:  
at memset (0x00007ffe54f71e40)  
at RtlRaiseException (0x00007ffe54f1b040)  
at FMOD::SystemI::validate (0x00007ffe0cf43510)  
at FMOD::SystemI::createMemoryFile (0x00007ffe0cf59b40)  
at FMOD::System::update (0x00007ffe0cf0e6b0)  
at FMOD5\_System\_Update (0x00007ffe185a4df0)  
at FMOD5\_System\_Update (0x00007ffe185a4df0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007ffe1862e7e0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007ffe1862e7e0)  
at FMOD5\_System\_Update (0x00007ffe185a4df0)  
at FMOD5\_System\_Update (0x00007ffe185a4df0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007ffe1862e7e0)  
at BaseThreadInitThunk (0x00007ffe54476fc0)  
at RtlUserThreadStart (0x00007ffe54f1cea0)

Violation when reading address **0xffffffffffffffff**  
Code: 0xc0000005  
Stack Trace:  
at memset (0x00007fff94c62f80)  
at RtlRaiseException (0x00007fff94c29e70)  
at FMOD::AsyncThread::wakeupThread (0x00007fff4d5531c0)  
at FMOD::AsyncThread::wakeupThread (0x00007fff4d5531c0)  
at FMOD::ChannelControl::stop (0x00007fff4d49f090)  
at FMOD::AsyncThread::wakeupThread (0x00007fff4d5531c0)  
at FMOD::SystemI::createMemoryFile (0x00007fff4d589b40)  
at FMOD::System::update (0x00007fff4d53e6b0)  
at FMOD5\_System\_Update (0x00007fff5a314df0)  
at FMOD5\_System\_Update (0x00007fff5a314df0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007fff5a39e7e0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007fff5a39e7e0)  
at FMOD5\_System\_Update (0x00007fff5a314df0)  
at FMOD5\_System\_Update (0x00007fff5a314df0)  
at FMOD\_Studio\_VCA\_SetVolume (0x00007fff5a39e7e0)  
at BaseThreadInitThunk (0x00007fff92d37bc0)  
at RtlUserThreadStart (0x00007fff94c2ce30)

Any help is greatly appreciated 🙂

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<div class="post-metadata">

**Author:** ![mathew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mathew/32/431_2.png) [@mathew](https://qa.fmod.com/u/mathew)\
**Post date:** [July 12, 2020, 11:41pm UTC](https://qa.fmod.com/t/fmod-studio-vca-setvolume/15961/2 "2020-07-12T23:41:50Z")

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Are you able to capture minidumps as part of your tools? If so, please send them to [support@fmod.com](mailto:support@fmod.com) and we can take a look into the cause of the crash.