pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66795-11_AdmiralGambiersWaltz.ps) >>/Users/jc/w/tmp/Tune-66795-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1808/Goulding/11_AdmiralGambiersWaltz.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-66795-11_AdmiralGambiersWaltz.abc 1054 ABC music file with the extracted tune(s)
Tune-66795-11_AdmiralGambiersWaltz.ps 34450 PostScript
Tune-66795-11_AdmiralGambiersWaltz.txt 1054 Plain-text file with the extracted tune(s)
Tune-66795-get.log 6171 Log file, useful mostly for debugging
These files should be available for 24 hours.