pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-78754-20861.ps) >>/Users/jc/w/tmp/Tune-78754-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ERM/20861=Voi_che_sapete-V2.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-78754-20861.abc 1313 ABC music file with the extracted tune(s)
Tune-78754-20861.ps 43716 PostScript
Tune-78754-20861.txt 1313 Plain-text file with the extracted tune(s)
Tune-78754-get.log 5373 Log file, useful mostly for debugging
These files should be available for 24 hours.