pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3348-MissHannahsJig.ps) >>/Users/jc/w/tmp/Tune-3348-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/MissHannahsJig.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_33484.log 133127 Log file, useful mostly for debugging
Find_33484.log 1489 Log file, useful mostly for debugging
Form_33483.log 826 Log file, useful mostly for debugging
Tune-3348-MissHannahsJig.abc 489 ABC music file with the extracted tune(s)
Tune-3348-MissHannahsJig.ps 36017 PostScript
Tune-3348-MissHannahsJig.txt 489 Plain-text file with the extracted tune(s)
Tune-3348-get.log 4371 Log file, useful mostly for debugging
Tune-33486-get.log 3579 Log file, useful mostly for debugging
Tune-33487-get.log 1526 Log file, useful mostly for debugging
Tune-33489-get.log 35602 Log file, useful mostly for debugging
These files should be available for 24 hours.