pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-43331-1274_Yell_yell.ps) >>/Users/jc/w/tmp/Tune-43331-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CSR/1274_Yell_yell.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_43331.log 854 Log file, useful mostly for debugging
Tune-43331-1274_Yell_yell.abc 1967 ABC music file with the extracted tune(s)
Tune-43331-1274_Yell_yell.ps 59029 PostScript
Tune-43331-1274_Yell_yell.txt 1967 Plain-text file with the extracted tune(s)
Tune-43331-get.log 8914 Log file, useful mostly for debugging
These files should be available for 24 hours.