pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9775-Skylarks_Reel.ps) >>/Users/jc/w/tmp/Tune-9775-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/Skylarks_Reel.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-6058-Tune97750.abc 0 ABC music file with the extracted tune(s)
Tune-6058-Tune97750.ps 6 PostScript
Tune-6058-Tune97750.txt 0 Plain-text file with the extracted tune(s)
Tune-9775-Skylarks_Reel.abc 505 ABC music file with the extracted tune(s)
Tune-9775-Skylarks_Reel.ps 34947 PostScript
Tune-9775-Skylarks_Reel.txt 505 Plain-text file with the extracted tune(s)
Tune-9775-get.log 5779 Log file, useful mostly for debugging
These files should be available for 24 hours.