pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4577-FiddlersMorrisThe_PLFD1701_437.ps) >>/Users/jc/w/tmp/Tune-4577-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/FiddlersMorrisThe_PLFD1701_437.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_45774.log 824 Log file, useful mostly for debugging
Tune-4577-FiddlersMorrisThe_PLFD1701_437.abc 404 ABC music file with the extracted tune(s)
Tune-4577-FiddlersMorrisThe_PLFD1701_437.ps 34426 PostScript
Tune-4577-FiddlersMorrisThe_PLFD1701_437.txt 404 Plain-text file with the extracted tune(s)
Tune-4577-get.log 4973 Log file, useful mostly for debugging
These files should be available for 24 hours.