Ich habs eben auch mal getestet. Gleiches Problem: mit "plate solve" bei allen Lights "fail". Ich verwende zum Testen die Flatpak Version von 3.7.8 auf Opensuse 15.6
Ich hab mal im "LiveStacker" thread im INDI Forum die Frage gestellt was da los ist. John hat eben auch schon darauf geantwortet:
KStars Live Stacker
Leider hab ich im Moment keine Muse zum weitertesten

Vielleicht hilfts ja bei euch weiter...
Das fits Kstars log sieht so aus:
[2025-09-03T10:49:46.737 CEST INFO ][ org.kde.kstars] - "Welcome to KStars" 3.7.8 Stable
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - Build: 2011-11-11T11:11:11Z
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - OS: "org.kde.Platform"
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - API: "x86_64-little_endian-lp64"
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - Arch: "x86_64"
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - Kernel Type: "linux"
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - Kernel Version: "6.4.0-150600.23.65-default"
[2025-09-03T10:49:46.741 CEST INFO ][ org.kde.kstars] - Qt Version: 6.9.0
[2025-09-03T10:49:47.946 CEST DEBG ][ org.kde.kstars] - Opened the User DB. Ready.
[2025-09-03T10:49:48.052 CEST INFO ][ org.kde.kstars] - Processing "unnamedstars.dat" , HTMesh Level 3
[2025-09-03T10:49:48.052 CEST INFO ][ org.kde.kstars] - Sky Mesh Size: 512
[2025-09-03T10:49:48.126 CEST INFO ][ org.kde.kstars] - Loaded DSO catalog file: "unnamedstars.dat"
[2025-09-03T10:49:48.126 CEST INFO ][ org.kde.kstars] - Processing "deepstars.dat" , HTMesh Level 3
[2025-09-03T10:49:48.126 CEST INFO ][ org.kde.kstars] - Sky Mesh Size: 512
[2025-09-03T10:49:48.126 CEST INFO ][ org.kde.kstars] - Loaded DSO catalog file: "deepstars.dat"
[2025-09-03T10:49:48.128 CEST INFO ][ org.kde.kstars] - Processing "USNO-NOMAD-1e8.dat" , HTMesh Level 6
[2025-09-03T10:49:48.131 CEST INFO ][ org.kde.kstars] - Sky Mesh Size: 32768
[2025-09-03T10:49:48.133 CEST INFO ][ org.kde.kstars] - Loaded DSO catalog file: "USNO-NOMAD-1e8.dat"
[2025-09-03T10:49:48.250 CEST WARN ][ org.kde.kstars] - "Der Stern HD20.794 wurde nicht gefunden."
[2025-09-03T10:49:48.256 CEST WARN ][ org.kde.kstars] - "Der Stern HD98.230 wurde nicht gefunden."
[2025-09-03T10:49:48.262 CEST INFO ][ org.kde.kstars] - Loaded DSO catalogs.
[2025-09-03T10:49:48.317 CEST INFO ][ org.kde.kstars] - Loading comets
[2025-09-03T10:49:48.399 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.439 CEST DEBG ][ org.kde.kstars] - Paths to color scheme : QList("/app/share/kstars/themes")
[2025-09-03T10:49:48.564 CEST DEBG ][ org.kde.kstars] - Reporting new timestep value: 60
[2025-09-03T10:49:48.590 CEST INFO ][ qt.gui.imageio] - libpng warning: iCCP: known incorrect sRGB profile
[2025-09-03T10:49:48.594 CEST INFO ][ qt.gui.imageio] - libpng warning: iCCP: known incorrect sRGB profile
[2025-09-03T10:49:48.736 CEST WARN ][ qt.core.qobject.connect] - QObject::connect(QAction, Ekos::Scheduler): invalid nullptr parameter
[2025-09-03T10:49:48.737 CEST INFO ][ qt.gui.imageio] - libpng warning: iCCP: known incorrect sRGB profile
[2025-09-03T10:49:48.737 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.737 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.739 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.740 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.742 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.742 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.742 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.743 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.746 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.796 CEST WARN ][ kf.configwidgets] - A widget named "kcfg_SaveFocusImages" was found but there is no setting named "SaveFocusImages"
[2025-09-03T10:49:48.796 CEST INFO ][ qt.gui.imageio] - libpng warning: iCCP: known incorrect sRGB profile
[2025-09-03T10:49:48.831 CEST DEBG ][ org.kde.kstars] - Daylight Saving Time active
[2025-09-03T10:49:48.831 CEST DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (Local Time): "Sun Oct 26 01:00:00 2025 GMT"
[2025-09-03T10:49:48.831 CEST DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (UTC): "Sat Oct 25 23:00:00 2025 GMT"
[2025-09-03T10:49:48.904 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.904 CEST WARN ][ default] - QDateTime::setTimeSpec: Pass a QTimeZone instead of Qt::TimeZone.
[2025-09-03T10:49:48.904 CEST DEBG ][ org.kde.kstars] - Daylight Saving Time active
[2025-09-03T10:49:48.904 CEST DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (Local Time): "Sun Oct 26 01:00:00 2025 GMT"
[2025-09-03T10:49:48.904 CEST DEBG ][ org.kde.kstars] - Next Daylight Savings Time change (UTC): "Sat Oct 25 23:00:00 2025 GMT"
[2025-09-03T10:49:48.904 CEST DEBG ][ org.kde.kstars] - Starting the timer
[2025-09-03T10:49:49.005 CEST DEBG ][ org.kde.kstars] - Date/Time is: "Wed Sep 3 08:49:48 2025 GMT"
[2025-09-03T10:49:49.005 CEST DEBG ][ org.kde.kstars] - Location: "Bellershausen, Deutschland"
[2025-09-03T10:49:49.005 CEST DEBG ][ org.kde.kstars] - TZ0: 1 TZ: 2
[2025-09-03T10:49:49.006 CEST WARN ][ qt.core.qobject.connect] - QObject::connect: No such signal QNetworkReplyHttpImpl::error(QNetworkReply::NetworkError)
[2025-09-03T10:49:49.006 CEST WARN ][ qt.core.qobject.connect] - QObject::connect: No such signal QNetworkReplyHttpImpl::error(QNetworkReply::NetworkError)
[2025-09-03T10:49:49.046 CEST WARN ][ default] - QImage::scaled: Image is a null image
[2025-09-03T10:49:49.162 CEST WARN ][ org.kde.kstars.ekos] - Failed to automatically connect due to missing EkosLive credentials: "org.freedesktop.DBus.Error.ServiceUnknown"
[2025-09-03T10:49:52.422 CEST INFO ][ org.kde.kstars] - Loading comets
[2025-09-03T10:49:55.399 CEST INFO ][ org.kde.kstars] - Loading asteroids
[2025-09-03T10:50:03.466 CEST DEBG ][ org.kde.kstars.fits] - OpenCV Optimized: true
[2025-09-03T10:50:03.468 CEST DEBG ][ org.kde.kstars.fits] - "Live Stacker running openCV on 24 threads. SIMD Features enabled: SSE SSE2 SSE3 *SSE4.1 *SSE4.2 *AVX *FP16 *AVX2 *AVX512-SKX?"
[2025-09-03T10:50:03.493 CEST DEBG ][ org.kde.kstars.fits] - Loading file ":/images/noimage.png"
[2025-09-03T10:50:03.514 CEST DEBG ][ org.kde.kstars.fits] - Started WCS Data Processing...
[2025-09-03T10:50:03.554 CEST DEBG ][ org.kde.kstars.fits] - FITHistogram: JMIndex 0.800274
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:08.583 CEST WARN ][ kf.solid.backends.udisks2] - Failed enumerating UDisks2 objects: "org.freedesktop.DBus.Error.Disconnected"
"Not connected to D-Bus server"
[2025-09-03T10:50:24.857 CEST DEBG ][ org.kde.kstars.fits] - Loading sub "/run/user/1000/doc/9d3a333/RGB/M_109_Light_300_secs_RM1_G60_O20_001.fits"
[2025-09-03T10:50:25.081 CEST DEBG ][ org.kde.kstars.fits] - Starting to plate solve sub...
[2025-09-03T10:50:44.680 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:45.681 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:46.681 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:47.682 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:48.683 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:49.683 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:50.684 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:50:51.684 CEST DEBG ][ org.kde.kstars.fits] - "subSolver timed out: 20.0s"
[2025-09-03T10:50:51.684 CEST DEBG ][ org.kde.kstars.fits] - Plate solve complete
[2025-09-03T10:50:51.684 CEST DEBG ][ org.kde.kstars.fits] - Loading sub "/run/user/1000/doc/9d3a333/RGB/M_109_Light_300_secs_RM1_G60_O20_002.fits"
[2025-09-03T10:50:51.907 CEST DEBG ][ org.kde.kstars.fits] - Starting to plate solve sub...
[2025-09-03T10:51:11.679 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:12.681 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:13.681 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:14.683 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:15.684 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:16.684 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:17.685 CEST DEBG ][ org.kde.kstars.fits] - "subSolver timed out: 20.0s"
[2025-09-03T10:51:17.685 CEST DEBG ][ org.kde.kstars.fits] - Plate solve complete
[2025-09-03T10:51:17.685 CEST DEBG ][ org.kde.kstars.fits] - Loading sub "/run/user/1000/doc/9d3a333/RGB/M_109_Light_300_secs_RM1_G60_O20_004.fits"
[2025-09-03T10:51:17.910 CEST DEBG ][ org.kde.kstars.fits] - Starting to plate solve sub...
[2025-09-03T10:51:37.680 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:38.681 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:39.682 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:40.682 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:41.683 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:42.683 CEST DEBG ][ org.kde.kstars.fits] - subSolverDone called, but it is still running. Waiting to finish...
[2025-09-03T10:51:43.683 CEST DEBG ][ org.kde.kstars.fits] - "subSolver timed out: 20.0s"
[2025-09-03T10:51:43.683 CEST DEBG ][ org.kde.kstars.fits] - Plate solve complete
[2025-09-03T10:51:43.684 CEST DEBG ][ org.kde.kstars.fits] - Loading sub "/run/user/1000/doc/9d3a333/RGB/M_109_Light_300_secs_RM1_G60_O20_005.fits"
[2025-09-03T10:51:43.903 CEST DEBG ][ org.kde.kstars.fits] - Starting to plate solve sub...