pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-96749-Mayden_Lane.ps) >>/Users/jc/w/tmp/Tune-96749-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/Mayden_Lane.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_96749.log 478010 Log file, useful mostly for debugging
Tune-96749-Mayden_Lane.abc 253 ABC music file with the extracted tune(s)
Tune-96749-Mayden_Lane.ps 32951 PostScript
Tune-96749-Mayden_Lane.txt 253 Plain-text file with the extracted tune(s)
Tune-96749-get.log 4449 Log file, useful mostly for debugging
These files should be available for 24 hours.