pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-674-JohnOfBadenyon_Am.ps) >>/Users/jc/w/tmp/Tune-674-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/reel/JohnOfBadenyon_Am.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
Coll_6741.log 136833 Log file, useful mostly for debugging
Coll_67493.log 262337 Log file, useful mostly for debugging
Form_67442.log 848 Log file, useful mostly for debugging
Form_67460.log 946 Log file, useful mostly for debugging
Form_67467.log 964 Log file, useful mostly for debugging
Form_67478.log 820 Log file, useful mostly for debugging
Form_67499.log 934 Log file, useful mostly for debugging
Tune-674-1109_Glasgow_Flourish_AL.abc 654 ABC music file with the extracted tune(s)
Tune-674-1109_Glasgow_Flourish_AL.txt 654 Plain-text file with the extracted tune(s)
Tune-674-JohnOfBadenyon_Am.abc 580 ABC music file with the extracted tune(s)
Tune-674-JohnOfBadenyon_Am.ps 35545 PostScript
Tune-674-JohnOfBadenyon_Am.txt 580 Plain-text file with the extracted tune(s)
Tune-674-get.log 9171 Log file, useful mostly for debugging
Tune-67400-get.log 0 Log file, useful mostly for debugging
Tune-67423-get.log 5513 Log file, useful mostly for debugging
Tune-67441-get.log 5510 Log file, useful mostly for debugging
Tune-67449-get.log 3444 Log file, useful mostly for debugging
Tune-67451-get.log 83047 Log file, useful mostly for debugging
Tune-67462-get.log 1484 Log file, useful mostly for debugging
Tune-67475-get.log 4686 Log file, useful mostly for debugging
These files should be available for 24 hours.