pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-55857-21_Prince_of_Brunswick.ps) >>/Users/jc/w/tmp/Tune-55857-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1784/Straight/21_Prince_of_Brunswick.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-55857-21_Prince_of_Brunswick.abc 926 ABC music file with the extracted tune(s)
Tune-55857-21_Prince_of_Brunswick.ps 35503 PostScript
Tune-55857-21_Prince_of_Brunswick.txt 926 Plain-text file with the extracted tune(s)
Tune-55857-get.log 4793 Log file, useful mostly for debugging
These files should be available for 24 hours.