SUMMARY Flatpak Kile is having problems when trying build a project (especially with other programs that are not pdflatex) due to problems with library versions. The latest org.kde.kile package uses the org.kde.Platform 6.10 runtime that doesn't include the libicuuc.so.75 library but libicuuc.so.77. STEPS TO REPRODUCE 1. Launch Flatpak Kile 2. Open a project or a .tex file 3. Build the project OBSERVED RESULT Kile fails to build the project with a warning. The output says that the executable that builds the project can't find the libicuuc.so.75 file. EXPECTED RESULT The project is built and the document is shown in the viewer. SOFTWARE/OS VERSIONS Operating System: Fedora Linux 43 KDE Plasma Version: 6.5.3 KDE Frameworks Version: 6.20.0 Qt Version: 6.10.1 Kernel Version: 6.17.10-300.fc43.x86_64 (64-bit) Graphics Platform: Wayland Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz Memory: 34 GB of RAM (33.4 GB usable) Graphics Processor: Intel® Iris® Xe Graphics ADDITIONAL INFORMATION I solved it by changing the org.freedesktop.Sdk.Extension.texlive version to use by Kile from 24.08 to 25.08.