I'm not sure how hard this would be to implement, but it would be nice to have mppdec log errors to a logfile, similarly to how mppenc can log its command-prompt output using --stderr. If I was a programmer, I could build a quick hack that would solve all my problems (and maybe world hunger while I was at it), but right now I'm dependent on someone more skilled than me to help me find a solution.

What I want to do is recursively decode all my MPC's to /dev/null and see if any have sync errors. Perhaps there's already a feature for this that I don't know about, but AFAIK it hasn't been discussed on these forums.

Does anyone know how I should do this?

RTFM of your OS.

Windows/DOS:
mppdec --scale 0 /dev/null 2> logfile

Linux/Unix:
mppdec --scale 0 / /dev/null 2> logfile

Doh! I was using the line mppdec *.mpc /dev/null > logfile.log. I didn't include the 2 (although I've logged things from the prompt before without having to put a 2 in there, such as dir > dirlist.txt).

Well, thanks for the info. I'll write a letter to Microsoft and ask them to include more detailed documentation with the next service pack, including a whole help topic describing how to decode and log all of the user's .mpc files