4.18 preview macOs broken package

Development Platform & Builds
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1

I can’t package my project in the 4.18 preview.

Not sure where to log bugs for the preview but in case it’s useful here’s the error I have:

~/PROJECTDIR/Saved/StagedBuilds/MacNoEditor/Engine/Binaries/Mac/UE4Game.app/Contents/MacOS/UE4Game ; exit;
LogMac: Error: appError called: Assertion failed: HasFoundDataDirectory [File:/Users/build/Build/++UE4+Release-4.18+Compile/Sync/Engine/Source/Runtime/Core/Private/Internationalization/ICUInternationalization.cpp] [Line: 128] 
ICU data directory was not discovered:
../../../Engine/Content/Internationalization
../../../Engine/Content/Internationalization
2

It’s the preview that means a lot of things are left out.

3

Ah I didn’t realize, thanks!
I don’t normally use the previews. But both 4.16 and 4.17 are broken on macOs