pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54831-NewRigaudonA_PLFD1690_312.ps) >>/Users/jc/w/tmp/Tune-54831-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/NewRigaudonA_PLFD1690_312.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-54831-NewRigaudonA_PLFD1690_312.abc 629 ABC music file with the extracted tune(s)
Tune-54831-NewRigaudonA_PLFD1690_312.ps 33850 PostScript
Tune-54831-NewRigaudonA_PLFD1690_312.txt 629 Plain-text file with the extracted tune(s)
Tune-54831-get.log 13066 Log file, useful mostly for debugging
Tune-54831-polka.abc 176 ABC music file with the extracted tune(s)
Tune-54831-polka.txt 176 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.