pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75785-131.ps) >>/Users/jc/w/tmp/Tune-75785-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/WilliamChristie/131=the_Braes_of_Boyndlie.abc2.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-75785-131.abc 1441 ABC music file with the extracted tune(s)
Tune-75785-131.ps 42923 PostScript
Tune-75785-131.txt 1441 Plain-text file with the extracted tune(s)
Tune-75785-get.log 6529 Log file, useful mostly for debugging
These files should be available for 24 hours.