pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-18428-Kit_OConnors_Reel_Bobby_Casey_Version.ps) >>/Users/jc/w/tmp/Tune-18428-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/air/Kit_OConnors_Reel_Bobby_Casey_Version.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-18428-Kit_OConnors_Reel_Bobby_Casey_Version.abc 817 ABC music file with the extracted tune(s)
Tune-18428-Kit_OConnors_Reel_Bobby_Casey_Version.ps 42529 PostScript
Tune-18428-Kit_OConnors_Reel_Bobby_Casey_Version.txt 817 Plain-text file with the extracted tune(s)
Tune-18428-get.log 5376 Log file, useful mostly for debugging
These files should be available for 24 hours.