pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1318-WaitingAnswers.ps) >>/Users/jc/w/tmp/Tune-1318-get.log 2>&1" returned status 256
http://www.sarahgowan.com/tunes/WaitingAnswers.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
Form_13183.log 884 Log file, useful mostly for debugging
Tune-1318-WaitingAnswers.abc 0 ABC music file with the extracted tune(s)
Tune-1318-WaitingAnswers.ps 0 PostScript
Tune-1318-WaitingAnswers.txt 0 Plain-text file with the extracted tune(s)
Tune-1318-get.log 0 Log file, useful mostly for debugging
Tune-13183-get.log 9677 Log file, useful mostly for debugging
Tune-13189-get.log 4094 Log file, useful mostly for debugging
These files should be available for 24 hours.