pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-56620-KingsDelightThe_PLFD1665_180.ps) >>/Users/jc/w/tmp/Tune-56620-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/KingsDelightThe_PLFD1665_180.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-56620-KingsDelightThe_PLFD1665_180.abc 359 ABC music file with the extracted tune(s)
Tune-56620-KingsDelightThe_PLFD1665_180.ps 33532 PostScript
Tune-56620-KingsDelightThe_PLFD1665_180.txt 359 Plain-text file with the extracted tune(s)
Tune-56620-get.log 4889 Log file, useful mostly for debugging
These files should be available for 24 hours.