pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-80133-031_Two_for_One.ps) >>/Users/jc/w/tmp/Tune-80133-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1765/Thompson/031_Two_for_One.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-80133-031_Two_for_One.abc 883 ABC music file with the extracted tune(s)
Tune-80133-031_Two_for_One.ps 34724 PostScript
Tune-80133-031_Two_for_One.txt 883 Plain-text file with the extracted tune(s)
Tune-80133-get.log 15365 Log file, useful mostly for debugging
These files should be available for 24 hours.