pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5836-10191_Russian_March.ps) >>/Users/jc/w/tmp/Tune-5836-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP1/10191_Russian_March.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_5836.log 1545 Log file, useful mostly for debugging
Find_58364.log 1533 Log file, useful mostly for debugging
Form_58369.log 970 Log file, useful mostly for debugging
Tune-5836-10191_Russian_March.abc 1335 ABC music file with the extracted tune(s)
Tune-5836-10191_Russian_March.ps 42622 PostScript
Tune-5836-10191_Russian_March.txt 1335 Plain-text file with the extracted tune(s)
Tune-5836-get.log 4839 Log file, useful mostly for debugging
Tune-58361-get.log 9988 Log file, useful mostly for debugging
Tune-58362-get.log 10460 Log file, useful mostly for debugging
Tune-58363-get.log 8509 Log file, useful mostly for debugging
Tune-58364-get.log 5082 Log file, useful mostly for debugging
Tune-58365-get.log 4234 Log file, useful mostly for debugging
Tune-58366-get.log 5572 Log file, useful mostly for debugging
Tune-58367-get.log 3890 Log file, useful mostly for debugging
Tune-58369-get.log 8978 Log file, useful mostly for debugging
These files should be available for 24 hours.