pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-74951-1047_Sawney.ps) >>/Users/jc/w/tmp/Tune-74951-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/AB/1047_Sawney.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-74951-1047_Sawney.abc 560 ABC music file with the extracted tune(s)
Tune-74951-1047_Sawney.ps 34727 PostScript
Tune-74951-1047_Sawney.txt 560 Plain-text file with the extracted tune(s)
Tune-74951-get.log 4424 Log file, useful mostly for debugging
These files should be available for 24 hours.