pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42311-GillansReel_A.ps) >>/Users/jc/w/tmp/Tune-42311-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/abc/Scotland/reel/GillansReel_A.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-42311-GillansReel_A.abc 578 ABC music file with the extracted tune(s)
Tune-42311-GillansReel_A.ps 35998 PostScript
Tune-42311-GillansReel_A.txt 578 Plain-text file with the extracted tune(s)
Tune-42311-get.log 4462 Log file, useful mostly for debugging
These files should be available for 24 hours.