pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78316-20741_Sul_Margine_Dun_Rio.ps) >>/Users/jc/w/tmp/Tune-78316-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ERM/20741_Sul_Margine_Dun_Rio.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-78316-20741_Sul_Margine_Dun_Rio.abc 625 ABC music file with the extracted tune(s)
Tune-78316-20741_Sul_Margine_Dun_Rio.ps 36961 PostScript
Tune-78316-20741_Sul_Margine_Dun_Rio.txt 625 Plain-text file with the extracted tune(s)
Tune-78316-CR10-001.svg 60909 Scalable Vector Graphics format
Tune-78316-CR10.abc 2262 ABC music file with the extracted tune(s)
Tune-78316-CR10.txt 2262 Plain-text file with the extracted tune(s)
Tune-78316-get.log 8672 Log file, useful mostly for debugging
These files should be available for 24 hours.