Crashes on DNG pinging

[ggarra13]

I am running latest ImageMagick-6.9.1-6

Version: ImageMagick 6.9.1-6 Q32 x86_64 2015-06-20 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC

I have tried loading a DNG image file with ImageMagick and the result in display is this:

display: delegate failed `"ufraw-batch" --silent --create-id=also --out-type=png --out-depth=16 "--output=%u.png" "%i"' @ error/delegate.c/InvokeDelegate/1332.
display: unable to open image `/tmp/magick-22731aLzhrGkY9cim.ppm': No such file or directory @ error/blob.c/OpenBlob/2697.

In my program the result is even worse ( a crash ):
Got signal 17
[bt] Execution path:
[bt] /lib/x86_64-linux-gnu/libpthread.so.0(waitpid+0x1e) [0x7f18d275084e]
[bt] /lib/x86_64-linux-gnu/libpthread.so.0(waitpid+0x1e) [0x7f18d275084e]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickCore-6.Q32HDRI.so.2(ExternalDelegateCommand+0x29c) [0x7f18d416981c]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickCore-6.Q32HDRI.so.2(InvokeDelegate+0x3f2) [0x7f18d416a7e2]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickCore-6.Q32HDRI.so.2(+0x23ac8a) [0x7f18d42e3c8a]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickCore-6.Q32HDRI.so.2(ReadImage+0x17f) [0x7f18d4160e4f]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickCore-6.Q32HDRI.so.2(ReadStream+0x117) [0x7f18d427f5a7]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickCore-6.Q32HDRI.so.2(PingImage+0x61) [0x7f18d41609c1]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/lib/libMagickWand-6.Q32HDRI.so.2(MagickPingImage+0x6a) [0x7f18d48085ca]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/bin/mrViewer(_ZN3mrv9wandImage4testEPKc+0x100) [0x4f9970]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/bin/mrViewer(_ZN3mrv10test_imageEPKcPhi+0x78) [0x4bbe28]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/bin/mrViewer(_ZN3mrv6CMedia11guess_imageEPKcPKhillb+0x13a) [0x4bbf8a]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/bin/mrViewer(_ZN3mrv12ImageBrowser10load_imageEPKcllllb+0x434) [0x574964]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/bin/mrViewer(_ZN3mrv12ImageBrowser4loadERKSt6vectorINS_8LoadInfoESaIS2_EEbb+0xb10) [0x576f90]
[bt] /media/Linux/code/applications/mrViewer/BUILD/Linux-3.2.0-38-generic-64/Release/bin/mrViewer(main+0x72c) [0x47dadc]

Can anybody help pinpoint the bug in, I believe, ImageMagick?

[ggarra13]

I forgot to mention that Krita opens the file just fine.

[snibgo]

Have you checked that ufraw-batch is installed and runs correctly? If it doesn't, that's the problem.

If that doesn't help, please give the command you used. You might also need to provide the input file so someone can try to reproduce the problem.

[ggarra13]

Yes, the ufraw-batch was missing. I had no clue ImageMagick relied on external programs to do its conversions. My program still crashes but it is not due to image magick (I tried a simple example and all worked fine).
All is moot, as the reading of the format is too slow to be of any use.