# Exception Accsess Violation Read on VCA SetVolume

**URL:** <https://qa.fmod.com/t/exception-accsess-violation-read-on-vca-setvolume/19503>\
**Category:** Unreal Engine\
**Created:** [November 10, 2022, 9:59pm UTC](https://qa.fmod.com/t/exception-accsess-violation-read-on-vca-setvolume/19503 "2022-11-10T21:59:30Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ptrefall](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/ptrefall/32/2672_2.png) [@ptrefall](https://qa.fmod.com/u/ptrefall)\
**Post date:** [November 10, 2022, 9:59pm UTC](https://qa.fmod.com/t/exception-accsess-violation-read-on-vca-setvolume/19503/1 "2022-11-10T21:59:30Z")

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Hi, our game keeps crashing with this Sentry call-stack pointing to FMOD\_Studio\_VCA\_SetVolume. We’re running Unreal 5.03 with FMOD 2.02.07. Any feelers on what might be the cause of this kind of crash? We haven’t been able to track down exactly when this occurs yet.

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/b/b8b37d446cc27e3ee8a82de49f2badf875d9449c.png)

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**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\
**Post date:** [November 13, 2022, 10:21pm UTC](https://qa.fmod.com/t/exception-accsess-violation-read-on-vca-setvolume/19503/2 "2022-11-13T22:21:27Z")

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We have seen similar call stacks to this, most of which were caused by prematurely releasing a sound used in a [Programmer Sound](https://fmod.com/docs/2.02/api/studio-guide.html#scripting-example). Are you using Programmer Sounds in this project? If so, are you releasing them during the [`FMOD_STUDIO_EVENT_CALLBACK_DESTROY_PROGRAMMER_SOUND`](https://fmod.com/docs/2.02/api/studio-api-eventinstance.html#fmod_studio_event_callback_destroy_programmer_sound) callback or somewhere else?

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**Author:** ![ptrefall](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/ptrefall/32/2672_2.png) [@ptrefall](https://qa.fmod.com/u/ptrefall)\
**Post date:** [November 15, 2022, 8:29am UTC](https://qa.fmod.com/t/exception-accsess-violation-read-on-vca-setvolume/19503/3 "2022-11-15T08:29:05Z")

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Thank you for getting back to me.

We don’t actually use Programmer Sound. My suspicion has been that unrelated crashes to the audio system has caused some odd shutdown state that has somehow caused this error to occur. I will see whether this error keeps happening as our game stabilize and let you know.

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**Author:** ![jeff\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/jeff_fmod/32/1766_2.png) [@jeff\_fmod](https://qa.fmod.com/u/jeff_fmod)\
**Post date:** [November 15, 2022, 10:40pm UTC](https://qa.fmod.com/t/exception-accsess-violation-read-on-vca-setvolume/19503/4 "2022-11-15T22:40:12Z")

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Okay then, thanks for the additional info- please let us know if you get any other FMDO related crashes in the meantime.