pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-89202-3025_Tricatrees.ps) >>/Users/jc/w/tmp/Tune-89202-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/AB/3025_Tricatrees.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-89202-3025_Tricatrees.abc 511 ABC music file with the extracted tune(s)
Tune-89202-3025_Tricatrees.ps 33244 PostScript
Tune-89202-3025_Tricatrees.txt 511 Plain-text file with the extracted tune(s)
Tune-89202-get.log 4529 Log file, useful mostly for debugging
These files should be available for 24 hours.