[mosh]

in simple mode

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Too many arguments in command line.

this section appears to be responsible:

ECHO.
ECHO Preparing...
"%relpath%software\pdftk.exe" "%inputFile%" dump_data output "%relpath%temp\doc_data.txt"
FOR /F "tokens=1-9" %%A in ('call more "%relpath%temp\doc_data.txt"') DO IF "%%A"=="NumberOfPages:" SET numPages=%%B
"%relpath%software\pdftk.exe" "%inputFile%" burst output "%relpath%\temp\stage1\%%04d" drop_xfa