The script is working perfectly from my testing but as of the latest update, the script always errors out after properly extracting the final file. This seems to occur on Mario + Rabbids and the Switch ver of South Park TFBW, but I haven't tested other SnowDrop games. It wouldn't make sense to provide sample files due everything extracted is accurate and it is just a bug with the script.
Error: incomplete input file -1: Can't read 3 bytes from offset *. Anyway don't worry, it's possible that the BMS script has been written to exit in this way if it's reached the end of the archive so check it or contact its author or verify that all the files have been extracted. Please check the following coverage information to know if it's ok.
coverage file -1 100%! * * . offset *
Last script line before the error or that produced the error: 99 get fileId long MEMORY_FILE coverage file 0 *% * * . offset 00000010 coverage file 1 0% 116 * . offset 00000000 coverage file -1 100%! * * . offset *
As far as I remember that format and the script are a mess. Too messy for working on them again and that error may be caused by whoever knows what different field.