pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-29607-018.ps) >>/Users/jc/w/tmp/Tune-29607-get.log 2>&1" returned status 256
http://www.thisoldtractor.com/guzzi007/Scottish_Tome/st_abc/018.1_Hiking_Song,_The.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-29607-018.abc 583 ABC music file with the extracted tune(s)
Tune-29607-018.ps 36264 PostScript
Tune-29607-018.txt 583 Plain-text file with the extracted tune(s)
Tune-29607-get.log 4460 Log file, useful mostly for debugging
These files should be available for 24 hours.