pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3383-ScotchCircle.ps) >>/Users/jc/w/tmp/Tune-3383-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/ScotchCircle.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_33832.log 440211 Log file, useful mostly for debugging
Coll_33833.log 431810 Log file, useful mostly for debugging
Coll_33836.log 441610 Log file, useful mostly for debugging
Coll_33837.log 126385 Log file, useful mostly for debugging
Tune-3383-ScotchCircle.abc 1826 ABC music file with the extracted tune(s)
Tune-3383-ScotchCircle.ps 48381 PostScript
Tune-3383-ScotchCircle.txt 1826 Plain-text file with the extracted tune(s)
Tune-3383-get.log 13310 Log file, useful mostly for debugging
Tune-33838-get.log 1417 Log file, useful mostly for debugging
These files should be available for 24 hours.