pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2520-JeffersonAndLiberty3.ps) >>/Users/jc/w/tmp/Tune-2520-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/JeffersonAndLiberty3.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_25200.log 63914 Log file, useful mostly for debugging
Coll_25205.log 70664 Log file, useful mostly for debugging
Coll_25208.log 67694 Log file, useful mostly for debugging
Form_2520.log 753 Log file, useful mostly for debugging
Form_25202.log 756 Log file, useful mostly for debugging
Form_25209.log 901 Log file, useful mostly for debugging
Tune-2520-JeffersonAndLiberty3.abc 611 ABC music file with the extracted tune(s)
Tune-2520-JeffersonAndLiberty3.ps 34205 PostScript
Tune-2520-JeffersonAndLiberty3.txt 611 Plain-text file with the extracted tune(s)
Tune-2520-get.log 4510 Log file, useful mostly for debugging
Tune-25201-get.log 5686 Log file, useful mostly for debugging
Tune-25202-get.log 4100 Log file, useful mostly for debugging
Tune-25204-get.log 10086 Log file, useful mostly for debugging
Tune-25205-get.log 6306 Log file, useful mostly for debugging
Tune-25208-get.log 3933 Log file, useful mostly for debugging
These files should be available for 24 hours.