pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6537-DukeofLuxemburghsMarch_PLFD1695_322.ps) >>/Users/jc/w/tmp/Tune-6537-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/DukeofLuxemburghsMarch_PLFD1695_322.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-6537-DukeofLuxemburghsMarch_PLFD1695_322.abc 435 ABC music file with the extracted tune(s)
Tune-6537-DukeofLuxemburghsMarch_PLFD1695_322.ps 34492 PostScript
Tune-6537-DukeofLuxemburghsMarch_PLFD1695_322.txt 435 Plain-text file with the extracted tune(s)
Tune-6537-get.log 5108 Log file, useful mostly for debugging
Tune-65370-all.abc 169 ABC music file with the extracted tune(s)
Tune-65370-all.pdf 2217 Portable Data Format
Tune-65370-all.ps 6 PostScript
Tune-65370-all.txt 169 Plain-text file with the extracted tune(s)
Tune-65370-get.log 4925 Log file, useful mostly for debugging
Tune-65377-get.log 4549 Log file, useful mostly for debugging
These files should be available for 24 hours.