pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6584-BonnetsOBlue.ps) >>/Users/jc/w/tmp/Tune-6584-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/misc/BonnetsOBlue.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
Tune-6584-BonnetsOBlue.abc 587 ABC music file with the extracted tune(s)
Tune-6584-BonnetsOBlue.ps 37223 PostScript
Tune-6584-BonnetsOBlue.txt 587 Plain-text file with the extracted tune(s)
Tune-6584-get.log 4271 Log file, useful mostly for debugging
Tune-65844-get.log 2943 Log file, useful mostly for debugging
These files should be available for 24 hours.