pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-63820-PigTownFling.ps) >>/Users/jc/w/tmp/Tune-63820-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/reel/PigTownFling.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-63820-PigTownFling.abc 307 ABC music file with the extracted tune(s)
Tune-63820-PigTownFling.ps 33777 PostScript
Tune-63820-PigTownFling.txt 307 Plain-text file with the extracted tune(s)
Tune-63820-get.log 4433 Log file, useful mostly for debugging
These files should be available for 24 hours.