pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-77329-BonnieCharlie_4_Dm.ps) >>/Users/jc/w/tmp/Tune-77329-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/hornpipe/BonnieCharlie_4_Dm.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-77329-BonnieCharlie_4_Dm.abc 584 ABC music file with the extracted tune(s)
Tune-77329-BonnieCharlie_4_Dm.ps 36801 PostScript
Tune-77329-BonnieCharlie_4_Dm.txt 584 Plain-text file with the extracted tune(s)
Tune-77329-get.log 4399 Log file, useful mostly for debugging
These files should be available for 24 hours.