pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-66889-2399_Boatmans_Dance.ps) >>/Users/jc/w/tmp/Tune-66889-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2399_Boatmans_Dance.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-66889-2399_Boatmans_Dance.abc 469 ABC music file with the extracted tune(s)
Tune-66889-2399_Boatmans_Dance.ps 33671 PostScript
Tune-66889-2399_Boatmans_Dance.txt 469 Plain-text file with the extracted tune(s)
Tune-66889-BB50.abc 141 ABC music file with the extracted tune(s)
Tune-66889-BB50.ps 6 PostScript
Tune-66889-BB50.txt 141 Plain-text file with the extracted tune(s)
Tune-66889-get.log 8644 Log file, useful mostly for debugging
These files should be available for 24 hours.