# A strange error with unity

**URL:** https://qa.fmod.com/t/a-strange-error-with-unity/20619
**Category:** Unity
**Tags:** csharp
**Created:** [September 4, 2023, 8:26pm UTC](https://qa.fmod.com/t/a-strange-error-with-unity/20619 "2023-09-04T20:26:42Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![mrquantumoff](https://avatars.discourse-cdn.com/v4/letter/m/e19b73/32.png) [@mrquantumoff](https://qa.fmod.com/u/mrquantumoff)
#### Post date: [September 4, 2023, 8:26pm UTC](https://qa.fmod.com/t/a-strange-error-with-unity/20619/1 "2023-09-04T20:26:42Z")

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Help, I get this error while using FMOD with unity and I don’t know what to do.

[FMOD] assert : assertion: ‘mInputChannelCount \>= 1 && mInputChannelCount \< FMOD\_SPEAKER\_MAX’ failed

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<div class="post-metadata">

### Author: ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [September 6, 2023, 2:37am UTC](https://qa.fmod.com/t/a-strange-error-with-unity/20619/2 "2023-09-06T02:37:32Z")

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Hi,

What version of FMOD are you using?

This may indicate that there is an issue with the amount of output assigned in your FMOD system. Are you calling [FMOD Engine | Core API Reference - System::setSoftwareFormat()](https://fmod.com/docs/2.02/api/core-api-system.html#system_setsoftwareformat) anywhere?