pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8765-061.ps) >>/Users/jc/w/tmp/Tune-8765-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/061=Christmas_Carol-V2.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_87651.log 264661 Log file, useful mostly for debugging
Coll_87658.log 261851 Log file, useful mostly for debugging
Form_8765.log 858 Log file, useful mostly for debugging
Form_87656.log 944 Log file, useful mostly for debugging
Tune-8765-061.abc 1764 ABC music file with the extracted tune(s)
Tune-8765-061.ps 41694 PostScript
Tune-8765-061.txt 1764 Plain-text file with the extracted tune(s)
Tune-8765-get.log 8666 Log file, useful mostly for debugging
Tune-87650-get.log 5015 Log file, useful mostly for debugging
Tune-87651-get.log 20548 Log file, useful mostly for debugging
Tune-87655-21222_CHOEUR_DES_CHASSERUS.abc 1012 ABC music file with the extracted tune(s)
Tune-87655-21222_CHOEUR_DES_CHASSERUS.pdf 29675 Portable Data Format
Tune-87655-21222_CHOEUR_DES_CHASSERUS.ps 45716 PostScript
Tune-87655-21222_CHOEUR_DES_CHASSERUS.txt 1012 Plain-text file with the extracted tune(s)
Tune-87655-get.log 5815 Log file, useful mostly for debugging
Tune-87656-get.log 5099 Log file, useful mostly for debugging
Tune-87659-get.log 69135 Log file, useful mostly for debugging
These files should be available for 24 hours.