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Bug
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    Resolution: Done
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P1: Critical
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    Qt Creator 4.9.0-beta2
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    None
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    Manjaro Linux
Ubuntu 18.04 LTS 64 bit
Qt 5.11.3
Qt 5.12.1 
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        31c2956e2b26a6924e0b05666c6abbad1ab37988 (qt-creator/qt-creator/4.9)
 
- Build Creator.
If that matters, I built outside the source directory. - In the build directory's subdirectory share/qtcreator/translations, run make ts-de.
It will fail with the message:lupdate error: Both project and source files / include paths specified. Makefile:555: recipe for target 'ts-de' failed make: *** [ts-de] Error 1
 
With Creator 4.8, this used to work.