pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93580-Set18_RJ.ps) >>/Users/jc/w/tmp/Tune-93580-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/RJ/sets/Set18_RJ.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_93580.log 262609 Log file, useful mostly for debugging
Form_93580.log 754 Log file, useful mostly for debugging
Tune-93580-Set18_RJ.abc 483 ABC music file with the extracted tune(s)
Tune-93580-Set18_RJ.ps 35777 PostScript
Tune-93580-Set18_RJ.txt 483 Plain-text file with the extracted tune(s)
Tune-93580-get.log 4955 Log file, useful mostly for debugging
These files should be available for 24 hours.