# Crash on FMOD Studio Update thread, Fmod Version: 2.00.09

**URL:** <https://qa.fmod.com/t/crash-on-fmod-studio-update-thread-fmod-version-2-00-09/15832>\
**Category:** FMOD Studio\
**Tags:** ios, android, unity\
**Created:** [June 1, 2020, 1:26pm UTC](https://qa.fmod.com/t/crash-on-fmod-studio-update-thread-fmod-version-2-00-09/15832 "2020-06-01T13:26:51Z")\
**Posts on this page:** 1\
**Showing post:** 9

<div class="post-metadata">

**Author:** ![tristanjl](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/tristanjl/32/261_2.png) [@tristanjl](https://qa.fmod.com/u/tristanjl)\
**Post date:** [June 5, 2020, 7:46am UTC](https://qa.fmod.com/t/crash-on-fmod-studio-update-thread-fmod-version-2-00-09/15832/9 "2020-06-05T07:46:38Z")

</div>

Hi Scourger,

Are you making any calls to FMOD\_Studio\_Bus\_UnlockChannelGroup? The callstack seems to indicate that the event’s input bus is already released before the event stops and releases, and a call to unlockChannelGroup can potentially make that happen.

---

_[View the full topic](https://qa.fmod.com/t/crash-on-fmod-studio-update-thread-fmod-version-2-00-09/15832)._