pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42643-1679-Whistling.ps) >>/Users/jc/w/tmp/Tune-42643-get.log 2>&1" returned status 256
http://www.oldmusicproject.com/AA2ABC/1201-1800/Abc-1601-1700/1679-Whistling.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
Tune-42643-1679-Whistling.abc 522 ABC music file with the extracted tune(s)
Tune-42643-1679-Whistling.ps 37521 PostScript
Tune-42643-1679-Whistling.txt 522 Plain-text file with the extracted tune(s)
Tune-42643-get.log 7411 Log file, useful mostly for debugging
These files should be available for 24 hours.