pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-17778-BotCDaSS.ps) >>/Users/jc/w/tmp/Tune-17778-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/BotCDaSS.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-17778-BotCDaSS.abc 64156 ABC music file with the extracted tune(s)
Tune-17778-BotCDaSS.ps 323433 PostScript
Tune-17778-BotCDaSS.txt 64156 Plain-text file with the extracted tune(s)
Tune-17778-get.log 38356 Log file, useful mostly for debugging
These files should be available for 24 hours.