While helping someone out on ebooks.stackexchange.com, exploding a large .djvu file using djvused I found my method, tested and working on Linux, would not work on Windows.
The problem seems to be with the
-e option and 'select' with an argument:
djvused large.djvu -e 'select 5; save-page-with page_05.djvu'
will not work under Windows (3.5.25 and 3.5.24 tested), and show the usage help. Just specifying 'select' works, but 'select 5' already triggers the help page to be displayed.
Creating a file with the lines two commands as lines and using
-f works fine and gives correct results.
There is also the original answer that triggered the question mentioned above, which includes python scripts (without and with the workaround), to automate the 'explosion' of the .djvu file.