# EventDescription's address changes after adding or removing audio track in event during Live Update

**URL:** <https://qa.fmod.com/t/eventdescriptions-address-changes-after-adding-or-removing-audio-track-in-event-during-live-update/17007>\
**Category:** FMOD Engine\
**Tags:** cpp\
**Created:** [April 8, 2021, 5:00pm UTC](https://qa.fmod.com/t/eventdescriptions-address-changes-after-adding-or-removing-audio-track-in-event-during-live-update/17007 "2021-04-08T17:00:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![23rmmorgan23](https://avatars.discourse-cdn.com/v4/letter/2/c37758/32.png) [@23rmmorgan23](https://qa.fmod.com/u/23rmmorgan23)\
**Post date:** [April 8, 2021, 5:00pm UTC](https://qa.fmod.com/t/eventdescriptions-address-changes-after-adding-or-removing-audio-track-in-event-during-live-update/17007/1 "2021-04-08T17:00:24Z")

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Hi!  
Is it expected that after adding or removing an audio track in an event, System::getEvent() will return a different FMOD::Studio::EventDescription address when Live Update is enabled? This behavior appeared after updating to v.2.01.08 from v.1.10.20.  
As a consequence, the old pointer is invalid and calls to EventDescription::loadSampleData() and EventDescription::createInstance() (most likely other methods too) fail with the result FMOD\_RESULT::FMOD\_ERR\_INVALID\_HANDLE

![FMOD](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/f/f2eac157d8ae2f17d46f917df3f534c812414227.jpeg)

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**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:** [April 8, 2021, 10:34pm UTC](https://qa.fmod.com/t/eventdescriptions-address-changes-after-adding-or-removing-audio-track-in-event-during-live-update/17007/2 "2021-04-08T22:34:06Z")

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This is indeed a bug that we recently fixed, you will need to update to 2.01.09 when it comes out (which is very soon).