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OverviewFelgo 3 Support (Qt 5) › Issue with license and versionCode


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  • #19024


    Hi All,

    I’ve started getting issues with generated Felgo licenses and version codes.

    I follow the same process as always:

    • Generate new license key for a versionCode and identifier
    • Update config.json versionCode
    • Update AndroidManifest.xml versionCode

    However, I now get errors on start up about an invalid license and version codes not matching and the app exits. This worked fine up until versionCode 22.

    I’ve emailed in the generated license key and config.json to the support inbox. Any ideas?

    Many thanks!



    I get this issue on both Windows and Android.

    I keep the license key in a singleton QML object (idea taken from one of the demos) called ‘Constants.qml’.

    I’m on Felgo version 2.15.1.


    Felgo Team

    Hi Kool,

    I just tried the license + config for version 22 on Desktop and Android and did not have any issues (with latest Felgo version).

    Can you make sure to create a fresh and clean build after you modified the license and configuration files:

    • Remove previous shadow build directory from file system (usually located beside your project folder and named e.g. “build-<project>-<kit>-Debug”)
    • Open project in Qt Creator
    • Right-click project in Project Tree  and choose “Clean”, followed by right-click and run qmake
    • Build and run your application

    Does it work with the new license?

    Günther from Felgo



    Hi Gunther,

    I don’t build release versions using shadow builds. I usually do a full clean (remove all compiled files etc) then a build and run.

    I’ll give it another try tonight.

    Many thanks!

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