pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-25660-OCallaghans_Hornpipe.ps) >>/Users/jc/w/tmp/Tune-25660-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/CuzTeahan/SliabhLuachroOnParade/OCallaghans_Hornpipe.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-25660-MaydenLane.abc 251 ABC music file with the extracted tune(s)
Tune-25660-MaydenLane.pdf 9943 Portable Data Format
Tune-25660-MaydenLane.ps 32799 PostScript
Tune-25660-MaydenLane.txt 251 Plain-text file with the extracted tune(s)
Tune-25660-OCallaghans_Hornpipe.abc 514 ABC music file with the extracted tune(s)
Tune-25660-OCallaghans_Hornpipe.ps 36078 PostScript
Tune-25660-OCallaghans_Hornpipe.txt 514 Plain-text file with the extracted tune(s)
Tune-25660-get.log 10090 Log file, useful mostly for debugging
These files should be available for 24 hours.