pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-47109-14_Bread_and_Cheese.ps) >>/Users/jc/w/tmp/Tune-47109-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/KittyBridges/1745/14_Bread_and_Cheese.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Form_47109.log 815 Log file, useful mostly for debugging
Tune-47109-14_Bread_and_Cheese.abc 925 ABC music file with the extracted tune(s)
Tune-47109-14_Bread_and_Cheese.ps 34483 PostScript
Tune-47109-14_Bread_and_Cheese.txt 925 Plain-text file with the extracted tune(s)
Tune-47109-get.log 4693 Log file, useful mostly for debugging
These files should be available for 24 hours.