pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1971-Grinders_Hp_C_6.ps) >>/Users/jc/w/tmp/Tune-1971-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Grinders_Hp_C_6.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_19714.log 285734 Log file, useful mostly for debugging
Coll_19716.log 410780 Log file, useful mostly for debugging
Tune-1971-Grinders_Hp_C_6.abc 670 ABC music file with the extracted tune(s)
Tune-1971-Grinders_Hp_C_6.ps 37355 PostScript
Tune-1971-Grinders_Hp_C_6.txt 670 Plain-text file with the extracted tune(s)
Tune-1971-get.log 9316 Log file, useful mostly for debugging
Tune-19713-get.log 10193 Log file, useful mostly for debugging
Tune-19715-get.log 9773 Log file, useful mostly for debugging
Tune-19716-get.log 4028 Log file, useful mostly for debugging
Tune-19719-get.log 5377 Log file, useful mostly for debugging
These files should be available for 24 hours.