pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-67226-D04_Crossing_the_Brook.ps) >>/Users/jc/w/tmp/Tune-67226-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/SocialDances2002/D04_Crossing_the_Brook.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-67226-D04_Crossing_the_Brook.abc 796 ABC music file with the extracted tune(s)
Tune-67226-D04_Crossing_the_Brook.ps 35942 PostScript
Tune-67226-D04_Crossing_the_Brook.txt 796 Plain-text file with the extracted tune(s)
Tune-67226-get.log 5344 Log file, useful mostly for debugging
These files should be available for 24 hours.