Good point, will add that now.

So I just connected via my mount computer, and to the ASI1600, just as yesterday.  It still had the (no longer existing) dark masters from yesterday in the database, and kstars reported warnings about files not found.  No crash though.  And I could easily remove those entries from the list in the darklib module master browser.
I quit and restarted again, no more warnings.  Taking new darks also succeeded, just like with the ASI183MC locally before.

So to be sure I'm not nuts I downgraded to the old version I used yesterday.  It directly crashes as soon as I try to connect to the ASI1600, with the same error message as yesterday (Character 9 in this keyword is illegal. Hex Value = FFFFFF80).
So either it was some error that got removed/fixed by your changes, or there was something fishy with my build.  But as it seems to work fine now, I assume it's not worth to further investigate this?
 

I don't know whether that is related, but I had repeated crashes while trying to build (not install) a brand new Kstars from the most recent master yesterday on a mini-PC with a stable Kstars installation from March 1. The build repeatedly crashed at the same point, saying there was a problem with a darklibrary file.

I don't recall exactly the name of that file, and I did not explore further since I had the stable Kstars version on the machine and I wanted to image, but reading this thread I am now wondering whether the issues are related. I can try to reproduce later tonight, if that is useful, and post the exact error message.

Jasem, please advise if you want me to do that.

Jo

Jasem,
I'm taking 'real' data today, after having played with the dark library yesterday.  Starting the sequence, I noticed that the received images are no longer displayed in the FitsViewer.  Indeed, the option in the configuration was disabled.  Is that set by the dark library sequences?  If so, please re-enable it afterwards.  Less because I want to see the images, but the statistics tab doesn't display HFR/Ecc if they are not loaded in the viewer....

I've also enabled 'Darks' for the guide camera today, and it flawlessly seems to use the ones I acquired yesterday - nice
 

Thanks for the feedback. I'll look into the FITSViewer issue, I think I've seen that.

My attempts to build a master darks library were unsuccessful (yesterday's GIT). Crashes occured repeatedly when the master dark was computed regardless of whether or not older files existed. I guess I had ~10 attempts. One succeeded, all others failed and crashed KStars/Ekos altogether.

I repeated the test with the laptop and this time there were no issues at all. Will try to find out what went wrong yesterday.

Today I re-visited the dark library feature and again it crashed when the first master dark was calculated. I tried a back-trace. Here's the output:

(gdb) run kstars
Starting program: /usr/bin/kstars kstars
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
QApplication::qAppName: Please instantiate the QApplication object first
[New Thread 0x7fffeefbe700 (LWP 12965)]
[New Thread 0x7fffee182700 (LWP 12966)]
Call to writableLocation without an application-based location.
[New Thread 0x7fffe68a3700 (LWP 12967)]
[New Thread 0x7fffe60a2700 (LWP 12968)]
[New Thread 0x7fffe58a1700 (LWP 12969)]
[New Thread 0x7fffe50a0700 (LWP 12970)]
[New Thread 0x7fffe489f700 (LWP 12971)]
[New Thread 0x7fffdb05b700 (LWP 12972)]
[New Thread 0x7fffda85a700 (LWP 12973)]
[New Thread 0x7fffda059700 (LWP 12974)]
[New Thread 0x7fffd9858700 (LWP 12975)]
[New Thread 0x7fffd9057700 (LWP 12976)]
[New Thread 0x7fffb3fff700 (LWP 12978)]
[New Thread 0x7fffabfff700 (LWP 12979)]
[New Thread 0x7fffa3fff700 (LWP 12980)]
[New Thread 0x7fffb1ffe700 (LWP 12981)]
[New Thread 0x7fffb1349700 (LWP 12982)]
[New Thread 0x7fffb0b48700 (LWP 12983)]
[New Thread 0x7fffa9b33700 (LWP 12988)]
[New Thread 0x7fffa9332700 (LWP 12989)]
[New Thread 0x7fffa8b31700 (LWP 12990)]
[New Thread 0x7fffa1e1f700 (LWP 12991)]
[New Thread 0x7fff7bfff700 (LWP 12992)]
[New Thread 0x7fffa1583700 (LWP 12993)]
[Thread 0x7fffa1583700 (LWP 12993) exited]
[Thread 0x7fffb1349700 (LWP 12982) exited]
[Thread 0x7fffa9332700 (LWP 12989) exited]
INDI::BaseClient::connectServer: creating new connection...
[New Thread 0x7fffa9332700 (LWP 12994)]
INDI::BaseClient::connectServer: Already connected.
INDI::BaseClient::connectServer: creating new connection...
[New Thread 0x7fffb1349700 (LWP 12995)]
INDI::BaseClient::connectServer: Already connected.
INDI::BaseClient::connectServer: creating new connection...
[New Thread 0x7fffa1583700 (LWP 12996)]
INDI::BaseClient::connectServer: Already connected.
[Detaching after fork from child process 12997]
[Detaching after fork from child process 12998]
[Thread 0x7fffb0b48700 (LWP 12983) exited]
[New Thread 0x7fffb0b48700 (LWP 12999)]
[Detaching after fork from child process 13001]
[Detaching after fork from child process 13002]
[Detaching after fork from child process 13003]
[Detaching after fork from child process 13004]
[Detaching after fork from child process 13007]

Thread 1 "kstars" received signal SIGSEGV, Segmentation fault.
0x00005555558f6855 in FITSData::constructHistogramInternal<unsigned short>()::{lambda()#2}::operator()() const (this=0x55555dd3d2a0) at /home/trifid/Astro/kstars/kstars/fitsviewer/fitsdata.cpp:3939
3939                                      static_cast<T>(rint((buffer - m_Statistics.min[n]) / m_HistogramBinWidth[n]))));
(gdb) bt
#0  0x00005555558f6855 in FITSData::constructHistogramInternal<unsigned short>()::{lambda()#2}::operator()() const (this=0x55555f72f290) at /home/trifid/Astro/kstars/kstars/fitsviewer/fitsdata.cpp:3939
#1  0x000055555593ea93 in QtConcurrent::StoredFunctorCall0<void, FITSData::constructHistogramInternal<unsigned short>()::{lambda()#2}>::runFunctor() (this=0x55555f72f270) at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentstoredfunctioncall.h:70
#2  0x00005555558d3801 in QtConcurrent::RunFunctionTask<void>::run() (this=0x55555f72f270) at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentrunbase.h:136
#3  0x00007ffff5165d62 in QThreadPoolPrivate::stealAndRunRunnable(QRunnable*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffff516a262 in QFutureInterfaceBase::waitForFinished() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00005555558d2ca1 in QFuture<void>::waitForFinished() (this=0x7fffffffcab0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfuture.h:227
#6  0x00005555558f6f60 in FITSData::constructHistogramInternal<unsigned short>() (this=0x55555dd3d2a0) at /home/trifid/Astro/kstars/kstars/fitsviewer/fitsdata.cpp:3946
#7  0x00005555558e4d4f in FITSData::constructHistogram() (this=0x55555dd3d2a0) at /home/trifid/Astro/kstars/kstars/fitsviewer/fitsdata.cpp:3873
#8  0x0000555555b5d588 in Ekos::DarkLibrary::processNewImage(Ekos::SequenceJob*, QSharedPointer<FITSData> const&) (this=0x555559645610, job=0x55555f5c9aa0, data=...) at /home/trifid/Astro/kstars/kstars/ekos/auxiliary/darklibrary.cpp:753
#9  0x0000555555b7a756 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1>, QtPrivate::List<Ekos::SequenceJob*, QSharedPointer<FITSData> const&>, void, void (Ekos::DarkLibrary::*)(Ekos::SequenceJob*, QSharedPointer<FITSData> const&)>::call(void (Ekos::DarkLibrary::*
)(Ekos::SequenceJob*, QSharedPointer<FITSData> const&), Ekos::DarkLibrary*, void**) (f=                                                                                                                                                                                       
   (void (Ekos::DarkLibrary::*)(Ekos::DarkLibrary * const, Ekos::SequenceJob *, const QSharedPointer<FITSData> &)) 0x555555b5d01e <Ekos::DarkLibrary::processNewImage(Ekos::SequenceJob*, QSharedPointer<FITSData> const&)>, o=0x555559645610, arg=0x7fffffffcf40)
   at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:152
#10 0x0000555555b78855 in QtPrivate::FunctionPointer<void (Ekos::DarkLibrary::*)(Ekos::SequenceJob*, QSharedPointer<FITSData> const&)>::call<QtPrivate::List<Ekos::SequenceJob*, QSharedPointer<FITSData> const&>, void>(void (Ekos::DarkLibrary::*)(Ekos::SequenceJob*, QSha
redPointer<FITSData> const&), Ekos::DarkLibrary*, void**) (f=                                                                                                                                                                                                                 
   (void (Ekos::DarkLibrary::*)(Ekos::DarkLibrary * const, Ekos::SequenceJob *, const QSharedPointer<FITSData> &)) 0x555555b5d01e <Ekos::DarkLibrary::processNewImage(Ekos::SequenceJob*, QSharedPointer<FITSData> const&)>, o=0x555559645610, arg=0x7fffffffcf40)
   at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185
#11 0x0000555555b75693 in QtPrivate::QSlotObject<void (Ekos::DarkLibrary::*)(Ekos::SequenceJob*, QSharedPointer<FITSData> const&), QtPrivate::List<Ekos::SequenceJob*, QSharedPointer<FITSData> const&>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool
*) (which=1, this_=0x55555f6d3540, r=0x555559645610, a=0x7fffffffcf40, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:414                                                                                                                            
#12 0x00007ffff5356458 in QMetaObject::activate(QObject*, int, int, void**) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x0000555555971908 in Ekos::Capture::newImage(Ekos::SequenceJob*, QSharedPointer<FITSData> const&) (this=0x55555dc34f70, _t1=0x55555f5c9aa0, _t2=...) at /home/trifid/Astro/kstars/build/kstars/KStarsLib_autogen/VONTORZADU/moc_capture.cpp:1248
#14 0x0000555555be3c39 in Ekos::Capture::setCaptureComplete() (this=0x55555dc34f70) at /home/trifid/Astro/kstars/kstars/ekos/capture/capture.cpp:1828
#15 0x0000555555be3441 in Ekos::Capture::processData(QSharedPointer<FITSData> const&) (this=0x55555dc34f70, data=...) at /home/trifid/Astro/kstars/kstars/ekos/capture/capture.cpp:1727
#16 0x0000555555c278de in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<QSharedPointer<FITSData> const&>, void, void (Ekos::Capture::*)(QSharedPointer<FITSData> const&)>::call(void (Ekos::Capture::*)(QSharedPointer<FITSData> const&), Ekos::Capture*,
void**) (f=(void (Ekos::Capture::*)(Ekos::Capture * const, const QSharedPointer<FITSData> &)) 0x555555be27e0 <Ekos::Capture::processData(QSharedPointer<FITSData> const&)>, o=0x55555dc34f70, arg=0x7fffffffd330)                                                            
   at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:152
#17 0x0000555555c24657 in QtPrivate::FunctionPointer<void (Ekos::Capture::*)(QSharedPointer<FITSData> const&)>::call<QtPrivate::List<QSharedPointer<FITSData> const&>, void>(void (Ekos::Capture::*)(QSharedPointer<FITSData> const&), Ekos::Capture*, void**) (f=
   (void (Ekos::Capture::*)(Ekos::Capture * const, const QSharedPointer<FITSData> &)) 0x555555be27e0 <Ekos::Capture::processData(QSharedPointer<FITSData> const&)>, o=0x55555dc34f70, arg=0x7fffffffd330)
   at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185
#18 0x0000555555c1df6b in QtPrivate::QSlotObject<void (Ekos::Capture::*)(QSharedPointer<FITSData> const&), QtPrivate::List<QSharedPointer<FITSData> const&>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*)
   (which=1, this_=0x55555dcdd5e0, r=0x55555dc34f70, a=0x7fffffffd330, ret=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:414
#19 0x00007ffff5356458 in QMetaObject::activate(QObject*, int, int, void**) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00005555559905ea in ISD::CCD::newImage(QSharedPointer<FITSData> const&) (this=0x55555ebe1a10, _t1=...) at /home/trifid/Astro/kstars/build/kstars/KStarsLib_autogen/FRI4DANIHA/moc_indiccd.cpp:412
#21 0x0000555555a45d10 in ISD::CCD::processBLOB(_IBLOB*) (this=0x55555ebe1a10, bp=0x7fff6c013880) at /home/trifid/Astro/kstars/kstars/indi/indiccd.cpp:1652
#22 0x0000555555a30757 in INDIListener::processBLOB(_IBLOB*) (this=0x555559f46820, bp=0x7fff6c013880) at /home/trifid/Astro/kstars/kstars/indi/indilistener.cpp:439
#23 0x0000555555a342af in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<_IBLOB*>, void, void (INDIListener::*)(_IBLOB*)>::call(void (INDIListener::*)(_IBLOB*), INDIListener*, void**) (f=
   (void (INDIListener::*)(INDIListener * const, _IBLOB *)) 0x555555a30672 <INDIListener::processBLOB(_IBLOB*)>, o=0x555559f46820, arg=0x7fffffffd680) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:152
#24 0x0000555555a33b3e in QtPrivate::FunctionPointer<void (INDIListener::*)(_IBLOB*)>::call<QtPrivate::List<_IBLOB*>, void>(void (INDIListener::*)(_IBLOB*), INDIListener*, void**) (f=
   (void (INDIListener::*)(INDIListener * const, _IBLOB *)) 0x555555a30672 <INDIListener::processBLOB(_IBLOB*)>, o=0x555559f46820, arg=0x7fffffffd680) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185
#25 0x0000555555a334bb in QtPrivate::QSlotObject<void (INDIListener::*)(_IBLOB*), QtPrivate::List<_IBLOB*>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x55555d10ec50, r=0x555559f46820, a=0x7fffffffd680, ret=0x0)
   at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:414
#26 0x00007ffff5356458 in QMetaObject::activate(QObject*, int, int, void**) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000055555598da08 in ClientManager::newINDIBLOB(_IBLOB*) (this=0x55555d109f60, _t1=0x7fff6c013880) at /home/trifid/Astro/kstars/build/kstars/KStarsLib_autogen/FRI4DANIHA/moc_clientmanager.cpp:368
#28 0x0000555555a03988 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<_IBLOB*>, void, void (ClientManager::*)(_IBLOB*)>::call(void (ClientManager::*)(_IBLOB*), ClientManager*, void**) (f=
   (void (ClientManager::*)(ClientManager * const, _IBLOB *)) 0x55555598d9ae <ClientManager::newINDIBLOB(_IBLOB*)>, o=0x55555d109f60, arg=0x7fff6c00ebe0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:152
#29 0x0000555555a035d1 in QtPrivate::FunctionPointer<void (ClientManager::*)(_IBLOB*)>::call<QtPrivate::List<_IBLOB*>, void>(void (ClientManager::*)(_IBLOB*), ClientManager*, void**) (f=
   (void (ClientManager::*)(ClientManager * const, _IBLOB *)) 0x55555598d9ae <ClientManager::newINDIBLOB(_IBLOB*)>, o=0x55555d109f60, arg=0x7fff6c00ebe0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185
#30 0x0000555555a030ed in QtPrivate::QSlotObject<void (ClientManager::*)(_IBLOB*), QtPrivate::List<_IBLOB*>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x7fff88024150, r=0x55555d109f60, a=0x7fff6c00ebe0, ret=0x0)
   at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:414
#31 0x00007ffff5356d5a in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007ffff5d44a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007ffff5d4e0f0 in QApplication::notify(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007ffff532a93a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
--Type <RET> for more, q to quit, c to continue without paging--c
#35 0x00007ffff532d5b8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007ffff5382f67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007ffff407b17d in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007ffff407b400 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007ffff407b4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007ffff5382565 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007ffff53294db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007ffff5331246 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x000055555564a8ed in main(int, char**) (argc=2, argv=0x7fffffffe0a8) at /home/trifid/Astro/kstars/kstars/main.cpp:393
(gdb)

The logfile is attached. Is there anything else I should try?
CS!

Please post a link to the FITS file so I can re-create the crash.

Where can I find these frames? All I can see are some master darks in ~/.local/share/kstars/darks
It appears the process does not crash 100% of the time.

 

You can do a regular capture. I think this is a division by zero error.

Ok I submitted a possible fix (if division by zero pans out), can you git pull and try again?