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[tmodes <2049641@xxxxxxxxxxxxxxxxxx>]

The log file looks the same on my machine.

When processing the first file dcraw prints the used wb multiplier:
multipliers 1.832031 1.000000 1.646484 1.000000

These are parsed by hugin and passed to the second call of dcraw.
This works on my side:
Prozessiere: C:\Users\Thomas\Downloads\dcraw.exe -r 1.832031 1.000000 1.646484 1.000000 -v -4 -T "C:\date

But on your side the last 2 numbers are missing:
Prozessiere: C:\Program Files\Hugin\bin\dcraw.exe -r 1.832031 1.000000  -v -4 -T "D:\test\IMG_0002.CR2"

So my assumptions was that there were some hidden characters (ASCII
<32), which confuses the parsing. But the log looks normal without
hidden characters.

(The parsing is very simple: all characters behind the word multipliers
up to the line end are used to construct the second dcraw call.)

Sorry, but currently I have no further idea what to check.

** Changed in: hugin
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/2049641

Title:
  Multiple RAW files with dcraw don't work

Status in Hugin:
  New

Bug description:
  Hello,

  I've had good results with JPEG files using Hugin and wanted to try RAW files.
  Since it is sufficient and you don't need any major software, I wanted to use dcraw. But I have a problem when I select several files at once as recommended.
  The first file is processed and then the import stops. If I interpret it correctly, there is probably a problem with the white-balance reference where, I think, not all the data is passed to the next pass.

  
  Prozessiere: C:\Program Files\Hugin\bin\dcraw.exe  -w -v -4 -T "D:\test\test\IMG_0005.CR2"
  Loading Canon EOS 1300D image from D:\test\test\IMG_0005.CR2 ...
  Scaling with darkness 2048, saturation 13584, and
  multipliers 2.089844 1.000000 1.419922 1.000000
  AHD interpolation...
  Converting to sRGB colorspace...
  Writing data to D:\test\test\IMG_0005.tiff ...
  Aktualisiere EXIF-Daten der Datei D:\test\test\IMG_0005.tiff
      1 image files updated

  Vorgang dauerte 3 s
  Prozessiere: C:\Program Files\Hugin\bin\dcraw.exe -r 2.089844 1.000000  -v -4 -T "D:\test\test\IMG_0006.CR2"
  Non-numeric argument to "-r"

  Vorgang dauerte 0 s

  
  From here nothing happens anymore. You can only cancel the import.
  If you import one file at a time, as is not recommended, there are no problems.

  Best regards
  Detlef Paschke

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