pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4821-On_the_Wings_of_a_Skorie_2-Em-32-3.ps) >>/Users/jc/w/tmp/Tune-4821-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/reel/On_the_Wings_of_a_Skorie_2-Em-32-3.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_48212.log 150067 Log file, useful mostly for debugging
Tune-4821-On_the_Wings_of_a_Skorie_2-Em-32-3.abc 624 ABC music file with the extracted tune(s)
Tune-4821-On_the_Wings_of_a_Skorie_2-Em-32-3.ps 35884 PostScript
Tune-4821-On_the_Wings_of_a_Skorie_2-Em-32-3.txt 624 Plain-text file with the extracted tune(s)
Tune-4821-get.log 6384 Log file, useful mostly for debugging
Tune-48215-get.log 5925 Log file, useful mostly for debugging
These files should be available for 24 hours.