pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2448-033_Contentment.ps) >>/Users/jc/w/tmp/Tune-2448-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EverydaySongBook/033_Contentment.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_24481.log 261851 Log file, useful mostly for debugging
Coll_24485.log 264661 Log file, useful mostly for debugging
Coll_24489.log 259041 Log file, useful mostly for debugging
Form_24480.log 1075 Log file, useful mostly for debugging
Form_24488.log 956 Log file, useful mostly for debugging
Tune-2448-033_Contentment.abc 648 ABC music file with the extracted tune(s)
Tune-2448-033_Contentment.ps 32632 PostScript
Tune-2448-033_Contentment.txt 648 Plain-text file with the extracted tune(s)
Tune-2448-get.log 4554 Log file, useful mostly for debugging
Tune-24486-get.log 5769 Log file, useful mostly for debugging
Tune-24487-get.log 17200 Log file, useful mostly for debugging
These files should be available for 24 hours.