Error "An unhandled exception occured.

Hi I just installed darktable 3.6.1 win64 on Win10.

Shortly after starting the app, I get an Error “An unhandled exception occured. Backtrace will be …”
If I open the backtrace, all it says is
"
this is darktable 3.6.1 reporting an exception:

"
There is nothing else in the file!

Thank you for your help,
Richard

Are you running any antivirus? If yes, can you disable it any try again?

Yes, I’m running Malwarebytes.
I stopped the real-time protection, started up darktable, which threw an exception, this time with more content.
this is darktable 3.6.1 reporting an exception:


Error occurred on Saturday, October 9, 2021 at 19:01:04.

darktable.exe caused an Access Violation at location 00007FFCB397EBD2 in module libchannelmixerrgb.dll Reading from location FFFFFFFFFFFFFFFF.

AddrPC Params
00007FFCB397EBD2 000000000000E536 0000000000000000 0000000000000001 libchannelmixerrgb.dll!0x7ffc0000ebd2

darktable.exe 3.6.1.0
ntdll.dll 10.0.19041.1202
KERNEL32.DLL 10.0.19041.1202
KERNELBASE.dll 10.0.19041.1202
msvcrt.dll 7.0.19041.546
libintl-8.dll 0.19.8.0
ADVAPI32.dll 10.0.19041.1052
sechost.dll 10.0.19041.906
RPCRT4.dll 10.0.19041.1081
libglib-2.0-0.dll 2.68.3.0
ole32.dll 10.0.19041.1202
ucrtbase.dll 10.0.19041.789
combase.dll 10.0.19041.1202
GDI32.dll 10.0.19041.1202
libdarktable.dll
PSAPI.DLL 10.0.19041.546
SHELL32.dll 10.0.19041.1202
msvcp_win.dll 10.0.19041.789
USER32.dll 10.0.19041.1202
libiconv-2.dll 1.16.0.0
win32u.dll 10.0.19041.1237
libwinpthread-1.dll 1.0.0.0
gdi32full.dll 10.0.19041.1110
WS2_32.dll 10.0.19041.546
libstdc+±6.dll
libcairo-2.dll
exchndl.dll 0.9.2.0
libgcc_s_seh-1.dll
libgdk-3-0.dll 3.24.29.0
IMM32.dll 10.0.19041.546
libgdk_pixbuf-2.0-0.dll 2.42.4.0
SETUPAPI.dll 10.0.19041.1237
cfgmgr32.dll 10.0.19041.1151
bcrypt.dll 10.0.19041.1023
libgobject-2.0-0.dll 2.68.3.0
libgtk-3-0.dll 3.24.29.0
libgio-2.0-0.dll 2.68.3.0
SHLWAPI.dll 10.0.19041.1023
libharfbuzz-0.dll
lua53.dll
libpango-1.0-0.dll 1.48.5.0
libpangocairo-1.0-0.dll 1.48.5.0
zlib1.dll
comdlg32.dll 10.0.19041.906
libgomp-1.dll
shcore.dll 10.0.19041.1023
libcurl-4.dll
libavif.dll
CRYPT32.dll 10.0.19041.1202
libexiv2.dll
WLDAP32.dll 10.0.19041.546
libgphoto2-6.dll
libgmodule-2.0-0.dll 2.68.3.0
libgphoto2_port-12.dll
libicuin68.dll
libGraphicsMagick-3.dll
libicuuc68.dll
libIlmImf-2_5.dll
libjpeg-8.dll
libjson-glib-1.0-0.dll
libopenjp2-7.dll
liblcms2-2.dll
libpng16-16.dll
libpugixml.dll 1.11.0.0
librsvg-2-2.dll
libsecret-1-0.dll
libsoup-2.4-1.dll
libsqlite3-0.dll
libtiff-5.dll
libxml2-2.dll
libpcre-1.dll
MSIMG32.dll 10.0.19041.546
libfontconfig-1.dll
libfreetype-6.dll 2.10.4.0
libpixman-1-0.dll
mgwhelp.dll 0.9.2.0
VERSION.dll 10.0.19041.546
dwmapi.dll 10.0.19041.746
gdiplus.dll 10.0.19041.1151
libcairo-gobject-2.dll
WINMM.dll 10.0.19041.546
libepoxy-0.dll
libfribidi-0.dll
libpangowin32-1.0-0.dll 1.48.5.0
libffi-7.dll
DNSAPI.dll 10.0.19041.1151
IPHLPAPI.DLL 10.0.19041.546
USP10.dll 10.0.19041.546
libgraphite2.dll
libthai-0.dll
libpangoft2-1.0-0.dll 1.48.5.0
COMCTL32.dll 6.10.19041.1110
WINSPOOL.DRV 10.0.19041.1237
libatk-1.0-0.dll 2.36.0.0
libexpat-1.dll
rav1e.dll
libdav1d.dll 5.1.0.0
libbrotlidec.dll
libaom.dll
libidn2-0.dll
libcrypto-1_1-x64.dll 1.1.1.11
libnghttp2-14.dll
libssh2-1.dll
libpsl-5.dll
libssl-1_1-x64.dll 1.1.1.11
libzstd.dll
libexif-12.dll
libltdl-7.dll
libsystre-0.dll
libbz2-1.dll
libHalf-2_5.dll
libIex-2_5.dll
libicudt68.dll
libIlmThread-2_5.dll
libImath-2_5.dll
USERENV.dll 10.0.19041.572
libgcrypt-20.dll 1.9.2.0
libjbig-0.dll
libdeflate.dll
liblzma-5.dll 5.2.5.0
libwebp-7.dll
dbghelp.dll 10.0.19041.867
libdatrie-1.dll
libbrotlicommon.dll
libunistring-2.dll 0.9.10.0
libtre-5.dll
libgpg-error-0.dll 1.42.0.0
CRYPTBASE.DLL 10.0.19041.546
dbgcore.DLL 10.0.19041.789
CRYPTSP.dll 10.0.19041.546
rsaenh.dll 10.0.19041.1052
bcryptPrimitives.dll 10.0.19041.1202
NSI.dll 10.0.19041.610
windows.storage.dll 10.0.19041.1202
Wldp.dll 10.0.19041.662
kernel.appcore.dll 10.0.19041.546
uxtheme.dll 10.0.19041.1081
OLEAUT32.dll 10.0.19041.985
clbcatq.dll 2001.12.10941.16384
propsys.dll 7.0.19041.1023
mswsock.dll 10.0.19041.546
MSCTF.dll 10.0.19041.1202
DEVOBJ.dll 10.0.19041.1151
WINTRUST.dll 10.0.19041.1237
MSASN1.dll 10.0.19041.546
OpenCL.dll 2.1.1.0
IntelOpenCL64.dll 23.20.16.4974
dxgi.dll 10.0.19041.964
intelocl64.dll 7.6.0.611
task_executor64.dll 7.6.0.611
OPENGL32.dll 10.0.19041.1081
GLU32.dll 10.0.19041.1081
cpu_device64.dll 7.6.0.611
igdrclneo64.dll
dxcore.dll 10.0.19041.546
IntelOpenCL64.dll 25.20.100.6373
profapi.dll 10.0.19041.844
winhttp.dll 10.0.19041.1151
IconCodecService.dll 10.0.19041.1
WindowsCodecs.dll 10.0.19041.1151
libpixbufloader-png.dll
mscms.dll 10.0.19041.746
ColorAdapterClient.dll 10.0.19041.546
icm32.dll 10.0.19041.546
textinputframework.dll 10.0.19041.1202
CoreUIComponents.dll 10.0.19041.546
CoreMessaging.dll 10.0.19041.746
ntmarta.dll 10.0.19041.546
wintypes.dll 10.0.19041.1202
libdarkroom.dll
libknight.dll
liblighttable.dll
libmap.dll
libosmgpsmap-1.0-1.dll
libslideshow.dll
libtethering.dll
libavif.dll
libcopy.dll
libexr.dll
libj2k.dll
libjpeg.dll
libpdf.dll
libpfm.dll
libpng.dll
libppm.dll
libtiff.dll
libwebp.dll
libxcf.dll
libdisk.dll
libemail.dll
libgallery.dll
AppXDeploymentClient.dll 10.0.19041.1110
liblatex.dll
Windows.ApplicationModel.dll 10.0.19041.746
twinapi.appcore.dll 10.0.19041.964
libpiwigo.dll
libashift.dll
Windows.FileExplorer.Common.dll 10.0.19041.1151
iertutil.dll 11.0.19041.1081
libatrous.dll
mssprxy.dll 7.0.19041.1151
libbasecurve.dll
libbasicadj.dll
libbilat.dll
libbilateral.dll
libbloom.dll
libborders.dll
libcacorrect.dll
libcacorrectrgb.dll
libcensorize.dll
libchannelmixer.dll
libchannelmixerrgb.dll
libclahe.dll
libclipping.dll
libcolisa.dll
libcolorbalance.dll
libcolorbalancergb.dll
libcolorchecker.dll
libcolorcontrast.dll
libcolorcorrection.dll
libcolorin.dll
libcolorize.dll
libcolormapping.dll
libcolorout.dll
libcolorreconstruct.dll
libcolortransfer.dll
libcolorzones.dll
libcrop.dll
libdefringe.dll
libdemosaic.dll
libdenoiseprofile.dll
libdither.dll
libequalizer.dll
libexposure.dll
libfilmic.dll
libfilmicrgb.dll
libfinalscale.dll
libflip.dll
libgamma.dll
libglobaltonemap.dll
libgraduatednd.dll
libgrain.dll
libhazeremoval.dll
libhighlights.dll
libhighpass.dll
libhotpixels.dll
libinvert.dll
liblens.dll
liblensfun.dll
liblevels.dll
libliquify.dll
liblowlight.dll
liblowpass.dll
liblut3d.dll
libgmic.dll
libfftw3-3.dll
libGraphicsMagick+±12.dll
libopencv_core452.dll 4.5.2.0
libopencv_videoio452.dll 4.5.2.0
tbb.dll
libopenblas.dll
libopencv_imgcodecs452.dll 4.5.2.0
libopencv_imgproc452.dll 4.5.2.0
libgfortran-5.dll
libquadmath-0.dll
libmask_manager.dll
libmonochrome.dll
libnegadoctor.dll
libnlmeans.dll
liboverexposed.dll
libprofile_gamma.dll
librawdenoise.dll
librawoverexposed.dll
librawprepare.dll
librelight.dll
libretouch.dll
librgbcurve.dll
librgblevels.dll
librotatepixels.dll
libscalepixels.dll
libshadhi.dll
libsharpen.dll
libsoften.dll
libsplittoning.dll
libspots.dll
libtemperature.dll
libtonecurve.dll
libtoneequal.dll
libtonemap.dll
libvelvia.dll
libvibrance.dll
libvignette.dll
libwatermark.dll
libzonesystem.dll
libbackgroundjobs.dll
libcamera.dll
libcollect.dll
libcolorlabels.dll
libcolorpicker.dll
libcopy_history.dll
libdarktable_label.dll
libduplicate.dll
libexport.dll
mrmcorer.dll 10.0.19041.1023
windows.staterepositorycore.dll 10.0.19041.844
bcp47mrm.dll 10.0.19041.867
libfilmstrip.dll
Windows.UI.dll 10.0.19041.746
WindowManagementAPI.dll
InputHost.dll 10.0.19041.906
libfilter.dll
libgeotagging.dll
libglobal_toolbox.dll
libhinter.dll
libhistogram.dll
libhistory.dll
libimage.dll
libimage_infos.dll
libimport.dll
libioporder.dll
liblighttable_mode.dll
liblive_view.dll
liblocation.dll
libmap_locations.dll
libmap_settings.dll
libmasks.dll
libmetadata.dll
libmetadata_view.dll
libmodulegroups.dll
libmodule_toolbox.dll
libnavigation.dll
libratings.dll
librecentcollect.dll
libselect.dll
libsession.dll
libsnapshots.dll
libstyles.dll
libtagging.dll
libtimeline.dll
libviewswitcher.dll
libview_toolbox.dll
libpixbufloader-svg.dll
TextShaping.dll

Windows 10.0.19043
DrMingw 0.9.2

I had the same issue recently. I did my edit, exported the raw to jpg and quit the software.

I saw that the jpg was not fully processed regarding the last editing step. the last history item was applied just to 50% looking from the top to the bottom of the raw. Later when starting darktable again to fix the export, the crash ocurred as soon as I opened the raw.

I had a 2nd instance of color balance rgb with a parametric mask in the stack as the last history item. After I removed that from the xmp sidecar, darktable started again without crashing and I redid my last step of editing.