pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16181-Gravel_walk_The_1.ps) >>/Users/jc/w/tmp/Tune-16181-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/Gravel_walk_The_1.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-16181-Gravel_walk_The_1.abc 500 ABC music file with the extracted tune(s)
Tune-16181-Gravel_walk_The_1.ps 39152 PostScript
Tune-16181-Gravel_walk_The_1.txt 500 Plain-text file with the extracted tune(s)
Tune-16181-get.log 4571 Log file, useful mostly for debugging
These files should be available for 24 hours.