pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2845-Champaign_Jig_Goes_to_Columbia_RJ-D-32-4.ps) >>/Users/jc/w/tmp/Tune-2845-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/learnJ/Champaign_Jig_Goes_to_Columbia_RJ-D-32-4.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_28453.log 140992 Log file, useful mostly for debugging
Coll_28455.log 135547 Log file, useful mostly for debugging
Coll_28458.log 257739 Log file, useful mostly for debugging
Tune-2845-Champaign_Jig_Goes_to_Columbia_RJ-D-32-4.abc 513 ABC music file with the extracted tune(s)
Tune-2845-Champaign_Jig_Goes_to_Columbia_RJ-D-32-4.ps 34729 PostScript
Tune-2845-Champaign_Jig_Goes_to_Columbia_RJ-D-32-4.txt 513 Plain-text file with the extracted tune(s)
Tune-2845-get.log 5250 Log file, useful mostly for debugging
Tune-28450-get.log 4489 Log file, useful mostly for debugging
These files should be available for 24 hours.