# Unity 2019.3.0f6 - ERR\_HEADER\_MISMATCH

**URL:** <https://qa.fmod.com/t/unity-2019-3-0f6-err-header-mismatch/15427>\
**Category:** Unity\
**Created:** [January 31, 2020, 6:38pm UTC](https://qa.fmod.com/t/unity-2019-3-0f6-err-header-mismatch/15427 "2020-01-31T18:38:02Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [February 13, 2020, 4:08am UTC](https://qa.fmod.com/t/unity-2019-3-0f6-err-header-mismatch/15427/7 "2020-02-13T04:08:34Z")

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Thanks for all the information, we have been able to reproduce this and will have to investigate this further.

This appears to be a regression in Unity 2019.3 and does still work in Unity 2019.2 and earlier.

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_[View the full topic](https://qa.fmod.com/t/unity-2019-3-0f6-err-header-mismatch/15427)._