pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-14929-020_Washington.ps) >>/Users/jc/w/tmp/Tune-14929-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/JeanWhite/100_Popular_HRJCD/020_Washington.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_14929.log 570789 Log file, useful mostly for debugging
Tune-14929-020_Washington.abc 736 ABC music file with the extracted tune(s)
Tune-14929-020_Washington.ps 37993 PostScript
Tune-14929-020_Washington.txt 736 Plain-text file with the extracted tune(s)
Tune-14929-get.log 4645 Log file, useful mostly for debugging
These files should be available for 24 hours.