# Bug on compile FMOD on new version 2.03.09

**URL:** <https://qa.fmod.com/t/bug-on-compile-fmod-on-new-version-2-03-09/23318>\
**Category:** FMOD Studio\
**Tags:** cpp, ue5\
**Created:** [September 5, 2025, 8:40am UTC](https://qa.fmod.com/t/bug-on-compile-fmod-on-new-version-2-03-09/23318 "2025-09-05T08:40:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Igor1986](https://avatars.discourse-cdn.com/v4/letter/i/da6949/32.png) [@Igor1986](https://qa.fmod.com/u/Igor1986)\
**Post date:** [September 5, 2025, 8:40am UTC](https://qa.fmod.com/t/bug-on-compile-fmod-on-new-version-2-03-09/23318/1 "2025-09-05T08:40:42Z")

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During compilation of the project (via VS or project packaging) the file FMODCallbackHandler.gen.cpp always gives an error. Each time I correct the include manually. Please fix this bug in the next version.

In file:  
#include “allbackHandler.h”

Error log:  
FMODCallbackHandler.gen.cpp(8,1): Error C1083 : Не удается открыть файл включение: allbackHandler.h: No such file or directory,

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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:** [September 7, 2025, 11:40pm UTC](https://qa.fmod.com/t/bug-on-compile-fmod-on-new-version-2-03-09/23318/2 "2025-09-07T23:40:39Z")

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This is a bug in UE5.6.1 and we have a fix ready for our next release: [Compile error with UE 5.6.1 - #7 by cameron-fmod](https://qa.fmod.com/t/compile-error-with-ue-5-6-1/23237/7)