After four months, I'm answering your question! (Sorry for the delay, I just realized myself.)
I forgot the -dBATCH flag when posting the instructions for Windows. Try:
Quote:
for %%I in (*.pdf) do (
"C:\Program Files\gs\gs9.00\bin\gswin32c.exe" -dSAFER -dNOPAUSE -dBATCH -sDEVICE#bbox "%%I" 2> bounding
"C:\Program Files\Calibre2\pdfmanipulate.exe" crop -o "%%~nI-cropped.pdf" -b bounding "%%I"
)
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(Again, double check that the paths to the executables are right, and that it's the right version of ghostscript; I've updated it to 9.00.)