pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3514-4071_Green_Sleeves.ps) >>/Users/jc/w/tmp/Tune-3514-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/4071_Green_Sleeves.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-3514-4071_Green_Sleeves.abc 1679 ABC music file with the extracted tune(s)
Tune-3514-4071_Green_Sleeves.ps 47487 PostScript
Tune-3514-4071_Green_Sleeves.txt 1679 Plain-text file with the extracted tune(s)
Tune-3514-get.log 4548 Log file, useful mostly for debugging
Tune-35141-get.log 5182 Log file, useful mostly for debugging
Tune-35142-get.log 5223 Log file, useful mostly for debugging
Tune-35145-get.log 6061 Log file, useful mostly for debugging
Tune-35149-get.log 4723 Log file, useful mostly for debugging
These files should be available for 24 hours.