pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42417-Vol02.ps) >>/Users/jc/w/tmp/Tune-42417-get.log 2>&1" returned status 256
http://www.scottishfiddlers.com/Sydney/Music/ABC/Vol02.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-42417-Vol02.abc 312 ABC music file with the extracted tune(s)
Tune-42417-Vol02.ps 34505 PostScript
Tune-42417-Vol02.txt 312 Plain-text file with the extracted tune(s)
Tune-42417-get.log 4085 Log file, useful mostly for debugging
These files should be available for 24 hours.