pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-55218-Cotillons.ps) >>/Users/jc/w/tmp/Tune-55218-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1770/Longman_Cotillons/Cotillons.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Form_55218.log 751 Log file, useful mostly for debugging
Tune-55218-Cotillons.abc 1416 ABC music file with the extracted tune(s)
Tune-55218-Cotillons.ps 40181 PostScript
Tune-55218-Cotillons.txt 1416 Plain-text file with the extracted tune(s)
Tune-55218-get.log 4360 Log file, useful mostly for debugging
These files should be available for 24 hours.