pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-37595-Green_Mt_Petronella.ps) >>/Users/jc/w/tmp/Tune-37595-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/NEFR/reel/Green_Mt_Petronella.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_37595.log 148252 Log file, useful mostly for debugging
Tune-37595-Green_Mt_Petronella.abc 409 ABC music file with the extracted tune(s)
Tune-37595-Green_Mt_Petronella.ps 35072 PostScript
Tune-37595-Green_Mt_Petronella.txt 409 Plain-text file with the extracted tune(s)
Tune-37595-get.log 4649 Log file, useful mostly for debugging
These files should be available for 24 hours.