# AU on XCode 10: ResMerger Error

**URL:** <https://forum.juce.com/t/au-on-xcode-10-resmerger-error/35074>\
**Category:** MacOSX and iOS\
**Created:** [September 4, 2019, 10:44am UTC](https://forum.juce.com/t/au-on-xcode-10-resmerger-error/35074 "2019-09-04T10:44:03Z")\
**Posts on this page:** 1\
**Showing post:** 32

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**Author:** ![t0m](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/t0m/32/16413_2.png) [@t0m](https://forum.juce.com/u/t0m)\
**Post date:** [November 26, 2019, 6:04pm UTC](https://forum.juce.com/t/au-on-xcode-10-resmerger-error/35074/32 "2019-11-26T18:04:14Z")

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So everything is working as expected following the copy to a path under your home directory?

That reminded me of something similar from a few years ago

> [@\[Solved\] AppConfig.h Rez Error 3 - AU, JUCE 4.2.4, macOS Sierra, XCode8](https://forum.juce.com/t/solved-appconfig-h-rez-error-3-au-juce-4-2-4-macos-sierra-xcode8/19438):
>
> Hey there, I finally found the time to look into JUCE 4, downloaded the 4.2.4 and installed it on a fresh (JUCE/XCode wise) system. Opened the plugin demo project and tried to compile it, which works fine for everything (VST2, VST3, AU3) except for AU plugins. When I select to not build an AU from the project, everything compiles OK. When I select to build an AU from the project, XCode constantly spits Rez error #3 at me. The trouble seems to be that it can’t find the AppConfig.h file. Pleas…

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