pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8475-Parsons_farewell.ps) >>/Users/jc/w/tmp/Tune-8475-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/Parsons_farewell.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-8475-Parsons_farewell.abc 310 ABC music file with the extracted tune(s)
Tune-8475-Parsons_farewell.ps 33019 PostScript
Tune-8475-Parsons_farewell.txt 310 Plain-text file with the extracted tune(s)
Tune-8475-get.log 4562 Log file, useful mostly for debugging
Tune-84750-CR88.abc 1540 ABC music file with the extracted tune(s)
Tune-84750-CR88.ps 45285 PostScript
Tune-84750-CR88.txt 1540 Plain-text file with the extracted tune(s)
Tune-84750-get.log 4378 Log file, useful mostly for debugging
These files should be available for 24 hours.