Can you post a command that works on your setting. Actually with all the failures, I am not even sure of what should be code.
If I remove the enclosing non-escaped double quotes, I get the "batch command executed successfully" but nothing output.
I put trace message into the function. they appear when I run the function from the script but not from the command line. As far as I am concerned the function is never started from the command line.
Script-fu is a real pain.
No batch interpreter specified, using the default 'plug-in-script-fu-eval'.
batch command experienced an execution error:
Error: (<unknown> : 18140835) eval: unbound variable: bitonal-converter-batch
EXIT: gimp_exit
EXIT: gimp_real_exit
Writing 'C:\Documents and Settings\P0957\.gimp-2.8\templaterc'
Writing 'C:\Documents and Settings\P0957\.gimp-2.8\parasiterc'
Writing 'C:\Documents and Settings\P0957\.gimp-2.8\unitrc'
EXIT: app_exit_after_callback