pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-67796-0473-CastleDonovan.ps) >>/Users/jc/w/tmp/Tune-67796-get.log 2>&1" returned status 256
http://www.oldmusicproject.com/AA2ABC/Abc-0401-0500/0473-CastleDonovan.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-67796-0473-CastleDonovan.abc 720 ABC music file with the extracted tune(s)
Tune-67796-0473-CastleDonovan.ps 36679 PostScript
Tune-67796-0473-CastleDonovan.txt 720 Plain-text file with the extracted tune(s)
Tune-67796-get.log 5247 Log file, useful mostly for debugging
These files should be available for 24 hours.