pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-62861-4020_.ps) >>/Users/jc/w/tmp/Tune-62861-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/4020_.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-62861-4020_.abc 42 ABC music file with the extracted tune(s)
Tune-62861-4020_.ps 30877 PostScript
Tune-62861-4020_.txt 42 Plain-text file with the extracted tune(s)
Tune-62861-get.log 3858 Log file, useful mostly for debugging
These files should be available for 24 hours.