pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7168-Huntsmans_Hp2_C.ps) >>/Users/jc/w/tmp/Tune-7168-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/hornpipe/Huntsmans_Hp2_C.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_71681.log 145383 Log file, useful mostly for debugging
Coll_71689.log 250609 Log file, useful mostly for debugging
Tune-7168-Huntsmans_Hp2_C.abc 555 ABC music file with the extracted tune(s)
Tune-7168-Huntsmans_Hp2_C.ps 35166 PostScript
Tune-7168-Huntsmans_Hp2_C.txt 555 Plain-text file with the extracted tune(s)
Tune-7168-get.log 5062 Log file, useful mostly for debugging
These files should be available for 24 hours.