pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-31950-BellesOfTipperaryReel.ps) >>/Users/jc/w/tmp/Tune-31950-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Entry/jc:trillian.mit.edu/BellesOfTipperaryReel.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
Form_31950.log 848 Log file, useful mostly for debugging
Tune-31950-BellesOfTipperaryReel.abc 378 ABC music file with the extracted tune(s)
Tune-31950-BellesOfTipperaryReel.ps 35739 PostScript
Tune-31950-BellesOfTipperaryReel.txt 378 Plain-text file with the extracted tune(s)
Tune-31950-get.log 4798 Log file, useful mostly for debugging
These files should be available for 24 hours.