pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8921-3061-Birnham_Wood.ps) >>/Users/jc/w/tmp/Tune-8921-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3061-Birnham_Wood.abc1.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_89212.log 253421 Log file, useful mostly for debugging
Coll_89219.log 138291 Log file, useful mostly for debugging
Tune-8921-3061-Birnham_Wood.abc 1177 ABC music file with the extracted tune(s)
Tune-8921-3061-Birnham_Wood.ps 44849 PostScript
Tune-8921-3061-Birnham_Wood.txt 1177 Plain-text file with the extracted tune(s)
Tune-8921-get.log 4566 Log file, useful mostly for debugging
Tune-89213-get.log 10290 Log file, useful mostly for debugging
Tune-89215-get.log 1394 Log file, useful mostly for debugging
These files should be available for 24 hours.