pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-48494-All_in_a_Green_Willow.ps) >>/Users/jc/w/tmp/Tune-48494-get.log 2>&1" returned status 256
http://tunearch.org/wiki/All_in_a_Green_Willow

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-48494-All_in_a_Green_Willow.abc 1549 ABC music file with the extracted tune(s)
Tune-48494-All_in_a_Green_Willow.ps 47308 PostScript
Tune-48494-All_in_a_Green_Willow.txt 1549 Plain-text file with the extracted tune(s)
Tune-48494-get.log 13330 Log file, useful mostly for debugging
These files should be available for 24 hours.