pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-48064-086_Chestnut.ps) >>/Users/jc/w/tmp/Tune-48064-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/EDM/086_Chestnut.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_48064.log 261851 Log file, useful mostly for debugging
Form_48064.log 837 Log file, useful mostly for debugging
Tune-48064-086_Chestnut.abc 1007 ABC music file with the extracted tune(s)
Tune-48064-086_Chestnut.ps 34039 PostScript
Tune-48064-086_Chestnut.txt 1007 Plain-text file with the extracted tune(s)
Tune-48064-get.log 9377 Log file, useful mostly for debugging
These files should be available for 24 hours.