convert: no images defined

# See: http://superuser.com/q/819277/87805
$ convert test.pdf test.png -debug all
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: utility.c/ExpandFilenames/944/Configure
  Command line: convert {test.pdf} {test.png} {-debug} {all}
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/coder.xml"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//config-Q16/coder.xml"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/coder.xml"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/doc/ImageMagick-6/coder.xml"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/Users/kenorb/.config/ImageMagick/coder.xml"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/Users/kenorb/.magick/coder.xml"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Configure convert[58320]: coder.c/LoadCoderCache/795/Configure
  Loading coder configuration file "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/coder.xml" ...
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Module convert[58320]: module.c/OpenModule/1268/Module
  Searching for module "PDF" using filename "pdf.la"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Module convert[58320]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "pdf.la" ...
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Module convert[58320]: module.c/OpenModule/1277/Module
  Opening module at path "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//modules-Q16/coders/pdf.la"
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Module convert[58320]: module.c/OpenModule/1304/Module
  Method "RegisterPDFImage" in module "PDF" at address 0x10a9bb56c
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Module convert[58320]: module.c/OpenModule/1318/Module
  Method "UnregisterPDFImage" in module "PDF" at address 0x10a9c1617
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Path; rights=Read; pattern="test.pdf" ...
2014-10-01T15:29:39+01:00 0:00.000 0.000u 6.8.9 Blob convert[58320]: blob.c/OpenBlob/2546/Blob
    read 3 magic header bytes
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Cache convert[58320]: cache.c/DestroyPixelCache/962/Cache
  destroy
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/magic.xml"
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//config-Q16/magic.xml"
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/magic.xml"
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/doc/ImageMagick-6/magic.xml"
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/Users/kenorb/.config/ImageMagick/magic.xml"
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/Users/kenorb/.magick/magic.xml"
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Configure convert[58320]: magic.c/LoadMagicCache/774/Configure
  Loading magic configure file "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/magic.xml" ...
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Coder; rights=Read; pattern="PDF" ...
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Path; rights=Read; pattern="test.pdf" ...
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Blob convert[58320]: blob.c/OpenBlob/2546/Blob
    read 3 magic header bytes
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Cache convert[58320]: cache.c/DestroyPixelCache/962/Cache
  destroy
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Path; rights=Read; pattern="test.pdf" ...
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Blob convert[58320]: blob.c/OpenBlob/2546/Blob
    read 3 magic header bytes
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Resource convert[58320]: resource.c/AcquireUniqueFileResource/468/Resource
  ...
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Resource convert[58320]: resource.c/AcquireUniqueFileResource/509/Resource
  Acquire /var/tmp/magick-58320cQzadoCe6gW4
2014-10-01T15:29:39+01:00 0:00.010 0.000u 6.8.9 Resource convert[58320]: resource.c/RelinquishUniqueFileResource/895/Resource
  Relinquish /var/tmp/magick-58320cQzadoCe6gW4
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Resource convert[58320]: resource.c/AcquireUniqueFileResource/468/Resource
  ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Resource convert[58320]: resource.c/AcquireUniqueFileResource/509/Resource
  Acquire /var/tmp/magick-58320qi_kqoEWO7kE
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/delegates.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//config-Q16/delegates.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/delegates.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/doc/ImageMagick-6/delegates.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/Users/kenorb/.config/ImageMagick/delegates.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: configure.c/GetConfigureOptions/679/Configure
  Searching for configure file: "/Users/kenorb/.magick/delegates.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: delegate.c/LoadDelegateCache/1289/Configure
  Loading delegate configuration file "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/delegates.xml" ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Resource convert[58320]: resource.c/AcquireUniqueFileResource/468/Resource
  ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Resource convert[58320]: resource.c/AcquireUniqueFileResource/509/Resource
  Acquire /var/tmp/magick-583200CUpMCE6Hikb
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Delegate; rights=Execute; pattern="gs" ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Resource convert[58320]: resource.c/RelinquishUniqueFileResource/895/Resource
  Relinquish /var/tmp/magick-58320qi_kqoEWO7kE
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Resource convert[58320]: resource.c/RelinquishUniqueFileResource/895/Resource
  Relinquish /var/tmp/magick-58320cQzadoCe6gW4
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Cache convert[58320]: cache.c/DestroyPixelCache/962/Cache
  destroy
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Module convert[58320]: module.c/OpenModule/1268/Module
  Searching for module "PNG" using filename "png.la"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Module convert[58320]: module.c/GetMagickModulePath/554/Module
  Searching for coder module file "png.la" ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Module convert[58320]: module.c/OpenModule/1277/Module
  Opening module at path "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//modules-Q16/coders/png.la"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Module convert[58320]: module.c/OpenModule/1304/Module
  Method "RegisterPNGImage" in module "PNG" at address 0x10a9fdb60
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Module convert[58320]: module.c/OpenModule/1318/Module
  Method "UnregisterPNGImage" in module "PNG" at address 0x10aa0785d
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Path; rights=Read; pattern="test.png" ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/locale.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//config-Q16/locale.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/locale.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/doc/ImageMagick-6/locale.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/Users/kenorb/.config/ImageMagick/locale.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/Users/kenorb/.magick/locale.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: locale.c/LoadLocaleCache/1186/Configure
  Loading locale configure file "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/locale.xml" ...
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/english.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/lib/ImageMagick//config-Q16/english.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/etc/ImageMagick-6/english.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/usr/local/Cellar/imagemagick/6.8.9-1/share/doc/ImageMagick-6/english.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/Users/kenorb/.config/ImageMagick/english.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Locale convert[58320]: locale.c/GetLocaleOptions/829/Locale
  Searching for locale file: "/Users/kenorb/.magick/english.xml"
2014-10-01T15:29:39+01:00 0:00.020 0.010u 6.8.9 Configure convert[58320]: locale.c/LoadLocaleCache/1186/Configure
  Loading locale configure file "/usr/local/Cellar/imagemagick/6.8.9-1/share/ImageMagick-6/english.xml" ...
2014-10-01T15:29:39+01:00 0:00.020 0.020u 6.8.9 Exception convert[58320]: blob.c/OpenBlob/2657/Exception
  unable to open image `test.png': No such file or directory
2014-10-01T15:29:39+01:00 0:00.020 0.020u 6.8.9 Cache convert[58320]: cache.c/DestroyPixelCache/962/Cache
  destroy
2014-10-01T15:29:39+01:00 0:00.020 0.020u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Coder; rights=Read; pattern="PNG" ...
2014-10-01T15:29:39+01:00 0:00.030 0.020u 6.8.9 Coder convert[58320]: png.c/ReadPNGImage/4015/Coder
  Enter ReadPNGImage()
2014-10-01T15:29:39+01:00 0:00.030 0.020u 6.8.9 Policy convert[58320]: policy.c/IsRightsAuthorized/574/Policy
  Domain: Path; rights=Read; pattern="test.png" ...
2014-10-01T15:29:39+01:00 0:00.030 0.020u 6.8.9 Exception convert[58320]: blob.c/OpenBlob/2657/Exception
  unable to open image `test.png': No such file or directory
2014-10-01T15:29:39+01:00 0:00.030 0.020u 6.8.9 Exception convert[58320]: png.c/ReadPNGImage/4021/Exception
  unable to open file `test.png'
2014-10-01T15:29:39+01:00 0:00.030 0.020u 6.8.9 Cache convert[58320]: cache.c/DestroyPixelCache/962/Cache
  destroy
2014-10-01T15:29:39+01:00 0:00.030 0.020u 6.8.9 Exception convert[58320]: convert.c/ConvertImageCommand/3184/Exception
  missing an image filename `all'
convert: unable to open image `test.png': No such file or directory @ error/blob.c/OpenBlob/2657.
convert: unable to open file `test.png' @ error/png.c/ReadPNGImage/4021.
convert: missing an image filename `all' @ error/convert.c/ConvertImageCommand/3184.