pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6889-SaintPatricksDay2_24.ps) >>/Users/jc/w/tmp/Tune-6889-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/misc/SaintPatricksDay2_24.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-6889-SaintPatricksDay2_24.abc 523 ABC music file with the extracted tune(s)
Tune-6889-SaintPatricksDay2_24.ps 34289 PostScript
Tune-6889-SaintPatricksDay2_24.txt 523 Plain-text file with the extracted tune(s)
Tune-6889-get.log 4491 Log file, useful mostly for debugging
Tune-68894-Morning_Gallop_Sodar_Na_Maidine.abc 412 ABC music file with the extracted tune(s)
Tune-68894-Morning_Gallop_Sodar_Na_Maidine.txt 412 Plain-text file with the extracted tune(s)
Tune-68894-get.log 3436 Log file, useful mostly for debugging
These files should be available for 24 hours.