pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-64852-64_PrayWhatIsThatToYou.ps) >>/Users/jc/w/tmp/Tune-64852-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1791/Thompson/64_PrayWhatIsThatToYou.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-64852-64_PrayWhatIsThatToYou.abc 742 ABC music file with the extracted tune(s)
Tune-64852-64_PrayWhatIsThatToYou.ps 34600 PostScript
Tune-64852-64_PrayWhatIsThatToYou.txt 742 Plain-text file with the extracted tune(s)
Tune-64852-get.log 4798 Log file, useful mostly for debugging
These files should be available for 24 hours.