pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-15684-821_Greenwich_Park.ps) >>/Users/jc/w/tmp/Tune-15684-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1779/Thompson/821_Greenwich_Park.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Coll_15684.log 166867 Log file, useful mostly for debugging
Tune-15684-821_Greenwich_Park.abc 821 ABC music file with the extracted tune(s)
Tune-15684-821_Greenwich_Park.ps 33484 PostScript
Tune-15684-821_Greenwich_Park.txt 821 Plain-text file with the extracted tune(s)
Tune-15684-get.log 4673 Log file, useful mostly for debugging
These files should be available for 24 hours.