pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-11911-2043_a_Cold_Frosty_Morning.ps) >>/Users/jc/w/tmp/Tune-11911-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2043_a_Cold_Frosty_Morning.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_11911.log 1186340 Log file, useful mostly for debugging
Tune-11911-2043_a_Cold_Frosty_Morning.abc 1208 ABC music file with the extracted tune(s)
Tune-11911-2043_a_Cold_Frosty_Morning.ps 40437 PostScript
Tune-11911-2043_a_Cold_Frosty_Morning.txt 1208 Plain-text file with the extracted tune(s)
Tune-11911-get.log 4783 Log file, useful mostly for debugging
These files should be available for 24 hours.